Filling mining methods, apparatus, media and equipment for gently dipping thick ore bodies

Abstract

This application discloses a backfilling mining method, apparatus, medium, and equipment for gently dipping thick ore bodies, relating to the field of underground mining technology in metal mines. The method includes: dividing the ore body into mining units along its vertical strike and determining structural parameters; selecting an adjacent mining area from one wing of the ore body as the first mining unit; and constructing a coordinated layout for drilling, ore extraction, and connecting roadways. Using the first mining unit as the basic operational unit, it is divided into a central main ore body area and upper and lower hanging wall triangular areas, and mining is carried out using a zoned coordinated mining process. Subsequent mining units are set up with the same parameters. While mining a portion of the first mining unit, the mining process is simultaneously applied to the corresponding areas of subsequent units, achieving spatial cross-construction. After mining is completed in each area of ​​the first mining unit, backfilling is carried out promptly, reserving a runway riser as a free face for subsequent mining, and reusing existing roadways as operational and ore extraction channels, achieving cyclic mining from one wing of the ore body to the other.

Description

Technical Field

[0001] This application relates to the field of underground mining technology for metal mines, and in particular to a filling mining method, apparatus, medium and equipment for gently dipping thick ore bodies. Background Technology

[0002] As the development of shallow, easily mined mineral resources continues to increase, the focus of metal mining is gradually shifting to deeper, more complex, and difficult-to-mine bodies. Gently dipping, thick ore bodies, as an important type of mineral resource, have become a key research focus and challenge in the field of mining engineering due to their efficient, safe, and low-loss mining technologies. These ore bodies typically have dip angles of 15°-30° and thicknesses often exceeding 40m. Spatially, they generally exhibit a thick central section and gradually thinner upper and lower borders, easily forming triangular residual zones on the hanging wall and footwall. Effective recovery of the ore body in these areas directly affects the resource utilization rate and economic benefits of the mine. How to achieve overall efficient recovery of these ore bodies has become a pressing technical problem for the industry.

[0003] Currently, for underground mining of gently dipping, thick ore bodies, the industry mainly adopts two technical solutions: sublevel stope-filling mining and layered / access-filling mining. Sublevel stope-filling and staged stope-filling mining, with their advantages of large-scale mining, possess high production capacity and high recovery efficiency, making them common methods for mining thick ore bodies in the central part of the body. Layered filling and access-filling mining can adapt to changes in ore body morphology and have certain advantages in controlling ore dilution losses. However, none of the existing technical solutions can simultaneously achieve a balance between recovery efficiency, resource recovery rate, and mining safety, exhibiting significant technical limitations.

[0004] The core problem with existing technologies lies in the difficulty of effectively coordinating and efficiently mining the central main area of ​​a gently dipping, thick ore body with the triangular residual areas on the hanging wall and footwall. When mining the triangular areas on the hanging wall and footwall, the open-stope backfilling method cannot adapt to the gradual change in ore thickness, easily leading to significant ore loss and dilution or residual ore in the triangular areas. Furthermore, if the large open areas formed after mining are not properly controlled, they can cause safety issues such as instability of the hanging wall. While the layered / entry backfilling method can achieve precise mining of the triangular ore body, it suffers from large preparatory work and complex operational cycles, significantly reducing overall mining efficiency and resulting in poor overall economic benefits for the mine. Therefore, there is an urgent need to develop a new backfilling mining method adapted to the spatial morphology of gently dipping, thick ore bodies, which, based on optimized preparatory work layout, can simultaneously achieve efficient, low-dilution, and safe mining of the central main ore body and the triangular ore bodies on the hanging wall and footwall. Summary of the Invention

[0005] In view of this, this application provides a filling mining method, apparatus, medium and equipment for gently dipping thick ore bodies, which can effectively achieve coordinated and efficient mining of the main central area and the triangular residual areas of the hanging wall and footwall of gently dipping thick ore bodies.

[0006] According to the first aspect of this application, a backfilling mining method for gently dipping thick ore bodies is provided, comprising:

[0007] The mining area is divided into units perpendicular to the ore body and the mining area structure parameters are determined. Based on the mining area range defined by the mining area structure parameters, multiple adjacent mining areas are taken as the first mining unit starting from one wing of the ore body. Based on the ore body space range of the first mining unit, a coordinated engineering layout of drilling roadways, ore extraction roadways and connecting roadways is constructed.

[0008] Taking the first mining unit as the smallest working unit, the ore body in the mining area within the first mining unit is divided into a central main ore body area and upper and lower triangular areas. A zoned coordinated mining process is adopted to carry out zoned coordinated mining of the central main ore body area and the upper and lower triangular areas. The zoned coordinated mining process includes: large-scale mining of the central main ore body area using medium-deep hole blasting, and fine mining of the upper and lower triangular areas using the large-path method.

[0009] Based on the first mining unit, subsequent mining units are built according to the same mining structure parameters. While completing the mining of a part of the first mining unit, the partitioned collaborative mining process is replicated to the corresponding area of ​​the next mining unit to carry out mining operations. Spatial cross-construction between mining areas is achieved by relying on the collaborative engineering layout.

[0010] After the mining of each area within the first mining unit is completed, subsequent backfilling is carried out within a specified time. A free face is reserved for subsequent mining, and the drilling roadways, ore extraction roadways and connecting roadways formed during construction are reused as working spaces and ore extraction channels for subsequent mining, thus completing the cyclic mining of the ore body from one wing to the other.

[0011] According to a second aspect of this application, a backfilling mining apparatus for a gently dipping, thick ore body is provided, comprising:

[0012] The division module is used to divide the mining area into units vertically to the ore body and determine the mining area structure parameters. Based on the mining area range defined by the mining area structure parameters, multiple adjacent mining area units are taken as the first mining unit starting from one wing of the ore body. Based on the ore body space range of the first mining unit, a coordinated engineering layout of drilling roadways, ore extraction roadways and connecting roadways is constructed.

[0013] The mining module is used to divide the ore body in the first mining unit into a central main ore body area and upper and lower triangular areas, with the first mining unit as the smallest working unit. The module employs a zoned coordinated mining process to carry out zoned coordinated mining of the central main ore body area and the upper and lower triangular areas. The zoned coordinated mining process includes: large-scale mining of the central main ore body area using medium-deep hole blasting, and fine mining of the upper and lower triangular areas using the large-path method.

[0014] The mining module is also used to build subsequent mining units based on the first mining unit and according to the same mining structure parameters. While completing the mining of a part of the first mining unit, the partitioned collaborative mining process is copied to the corresponding area of ​​the next mining unit to carry out mining operations. The spatial cross-construction between mining areas is realized by relying on the collaborative engineering layout.

[0015] The mining module is also used to carry out subsequent backfilling within a specified time after completing the mining of each area in the first mining unit, to reserve the access well as the free face for subsequent mining, and to reuse the drilling roadway, ore extraction roadway and connecting roadway formed during construction as the working space and ore extraction channel for subsequent mining, so as to complete the cyclic mining of the ore body from one wing to the other.

[0016] According to a third aspect of this application, a storage medium is provided that stores a computer program thereon, which, when executed by a processor, implements the above-described filling mining method for gently dipping thick ore bodies.

[0017] According to a fourth aspect of this application, an electronic device is provided, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor executes the program to implement the above-described filling mining method for gently dipping thick ore bodies.

[0018] By means of the above technical solution, the filling mining method, apparatus, medium and equipment of the gently dipping thick ore body provided in this application can divide the mining area into units vertically to the ore body strike and form mining units, and construct a collaborative engineering layout of drilling roadways, ore extraction roadways and connecting roadways. The ore body is divided into the central main ore body area and the upper and lower plate triangular areas with the mining unit as the smallest working unit. The zoning collaborative mining process of large-scale mining of the central main ore body by medium-deep hole blasting and fine mining of the upper and lower plate triangular areas by large-path method is adopted. At the same time, subsequent mining units are formed based on unified mining area structure parameters to realize spatial cross construction between multiple mining areas. After mining, timely filling, reserved access shafts and reuse of existing roadway engineering are carried out to complete the cyclic mining of the ore body from one wing to the other. This scheme leverages the scale advantage of deep-hole blasting to maintain high mining efficiency in the central thick ore body, while also adapting to the gradually varying thickness of the ore body in the hanging wall and footwall triangular areas through the fine mining of the large-path method. This effectively avoids ore loss and dilution, as well as ore body residue. Furthermore, the optimized preparatory engineering layout significantly reduces the amount of preparatory work and simplifies operational cycles. The cross-construction of multiple mining areas and the reuse of roadway engineering further enhance overall mining efficiency. Timely post-mining and roadway roof support effectively manage post-mining void risks and prevent instability of the hanging wall. Ultimately, based on the optimized preparatory engineering layout, it simultaneously achieves efficient, low-loss, and safe mining of the central main area of ​​the gently dipping thick ore body and the residual triangular areas in the hanging wall and footwall, synergistically achieving mining efficiency, resource recovery rate, and mining safety.

[0019] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 A schematic flowchart of a backfilling mining method for a gently dipping thick ore body provided in an embodiment of this application is shown.

[0022] Figure 2 A schematic flowchart of a backfilling mining method for a gently dipping thick ore body, according to another embodiment of this application, is shown.

[0023] Figure 3 This illustration shows a schematic diagram of a medium-deep hole first mining process for the main ore body in the hanging wall, provided in an embodiment of this application.

[0024] Figure 4 This illustration shows a schematic diagram of a medium-deep hole mining process for the main ore body in the footwall, provided in an embodiment of this application.

[0025] Figure 5 This paper illustrates a schematic diagram of a deep-hole mining process in the middle of a first mining unit, according to an embodiment of this application.

[0026] Figure 6 This paper illustrates a schematic diagram of a large-path mining process for the remaining ore body in the hanging wall triangle area of ​​a first mining unit, provided by an embodiment of this application.

[0027] Figure 7 This illustration shows a schematic diagram of a deep-hole mining process in the main ore body of the footwall of the first mining unit, provided in an embodiment of this application.

[0028] Figure 8 This paper illustrates a schematic diagram of a modular approach mining process for the remaining ore body in the footwall triangular area of ​​a first mining unit, provided by an embodiment of this application.

[0029] Figure 9 This illustration shows a schematic diagram of a horizontal mining sequence partitioning provided in an embodiment of this application;

[0030] Figure 10 This paper illustrates a schematic diagram of a cyclic propulsion process for a mining unit according to an embodiment of this application.

[0031] Figure 11 This illustration shows a schematic diagram of a facade mining sequence zoning provided in an embodiment of this application;

[0032] Figure 12 This illustration shows a structural schematic diagram of a filling mining device for a gently inclined thick ore body according to an embodiment of this application;

[0033] In the picture:

[0034] A1 - Stage transport roadway, A2 - Upper drilling roadway, A3 - Lower ore extraction roadway, A4 - Cutting riser, A5 - Cutting slot, A6 - Connecting roadway between the outer and inner stopes of the first mining unit, A8 - First pre-controlled roof support, A9 - Downward fan-shaped medium-deep hole, A10 - Upward fan-shaped medium-deep hole, A11 - Horizontal parallel shallow hole, A12 - Ore extraction roadway in the outer stope of the first mining unit, A13 - Along-the-way riser, A14 - Second pre-controlled roof support, A15 - Downward parallel blast hole, A16 - Stope connecting roadway, A17 - Connecting roadway, A18 - Lower stage transport roadway, A19 - Ore extraction in the inner stope of the first mining unit. Roadways, A20 - Upper connecting roadway in the middle stope of the first mining unit, A21 - Drilling roadway in the middle stope of the first mining unit, A22 - Ore extraction roadway in the middle stope of the first mining unit, A23 - Single-layer access road, A24 - Double-layer access road, A25 - Three-layer access road, A26 - Thick ore body module, A27 - Thin ore body module, X - First mining unit, X1 - Outer stope of the first mining unit, X2 - Middle stope of the first mining unit, X3 - Inner stope of the first mining unit, Y - Second mining unit, Y1 - Outer stope of the second mining unit, Y2 - Middle stope of the second mining unit, Y3 - Inner stope of the second mining unit;

[0035] ① - First mining area of ​​medium-deep holes on the upper side of the first mining unit; ② - Remaining ore body in the triangular area of ​​the upper side of the first mining unit; ③ - Main ore body in the lower side of the first mining unit; ④ - Remaining ore body in the triangular area of ​​the lower side of the first mining unit; ⑤ - First mining area of ​​the upper side of the ore body in the outer stope of the second mining unit; ⑥ - Remaining ore body in the triangular area of ​​the upper side of the second mining unit; ⑦ - Main ore body in the triangular area of ​​the lower side of the second mining unit; ⑧ - Middle ore body of the first mining unit.

[0036] 121 - Dividing module, 122 - Recovering module. Detailed Implementation

[0037] The present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present application can be combined with each other.

[0038] Currently, for underground mining of gently dipping, thick ore bodies, the industry mainly adopts two technical solutions: sublevel stope-filling mining and layered / access-filling mining. Sublevel stope-filling and staged stope-filling mining, with their advantages of large-scale mining, possess high production capacity and high recovery efficiency, making them common methods for mining thick ore bodies in the central part of the body. Layered filling and access-filling mining can adapt to changes in ore body morphology and have certain advantages in controlling ore dilution losses. However, none of the existing technical solutions can simultaneously achieve a balance between recovery efficiency, resource recovery rate, and mining safety, exhibiting significant technical limitations.

[0039] The core problem with existing technologies lies in the difficulty of effectively coordinating and efficiently mining the central main area of ​​a gently dipping, thick ore body with the triangular residual areas on the hanging wall and footwall. When mining the triangular areas on the hanging wall and footwall, the open-stope backfilling method cannot adapt to the gradual change in ore thickness, easily leading to significant ore loss and dilution or residual ore in the triangular areas. Furthermore, if the large open areas formed after mining are not properly controlled, they can cause safety issues such as instability of the hanging wall. While the layered / entry backfilling method can achieve precise mining of the triangular ore body, it suffers from large preparatory work and complex operational cycles, significantly reducing overall mining efficiency and resulting in poor overall economic benefits for the mine. Therefore, there is an urgent need to develop a new backfilling mining method adapted to the spatial morphology of gently dipping, thick ore bodies, which, based on optimized preparatory work layout, can simultaneously achieve efficient, low-dilution, and safe mining of the central main ore body and the triangular ore bodies on the hanging wall and footwall.

[0040] Accordingly, in order to solve the above-mentioned technical problems, embodiments of the present invention provide a backfilling mining method for gently dipping thick ore bodies, such as... Figure 1 As shown, the method includes:

[0041] Step 110: Divide the mining area into units perpendicular to the ore body strike and determine the mining area structure parameters. Based on the mining area range defined by the mining area structure parameters, take multiple adjacent mining area units as the first mining unit starting from one wing of the ore body. Based on the ore body space range of the first mining unit, construct a coordinated engineering layout of drilling roadways, ore extraction roadways and connecting roadways.

[0042] Among them, the stope unit is a basic ore body mining unit formed by dividing the ore body vertically to adapt to the spatial morphology and mining operation requirements of the gently dipping thick ore body. It has independent mining operation conditions and is the basic unit constituting the mining unit. The stope structure parameters are the core dimensional parameters determined for the divided stope units to achieve efficient and safe mining of the ore body. They can cover key indicators such as the length, stage height, and width of the stope. The first mining unit is an ore body unit formed by combining several adjacent stope units starting from one wing of the ore body mining. It is the first overall mining operation unit and is the basic operation unit for zonal and coordinated mining of the ore body. Subsequent mining units are all constructed according to its parameters and layout. The ore body spatial range is the boundary range of the ore body covered by the first mining unit in three-dimensional space, including the horizontal extension, vertical occurrence, and boundary with the surrounding rock of the ore body. Boundaries serve as the spatial basis for the layout and construction of engineering roadways. The coordinated engineering layout, centered around the ore body mining needs of the first mining unit, is a roadway engineering system formed by the overall planning and construction of interconnected and complementary drilling roadways, ore extraction roadways, and connecting roadways. Each roadway coordinates its spatial layout and operational functions to serve the overall mining operations of the mining unit. Drilling roadways, located at specific locations within the mining unit, are primarily used for drilling and blasting operations, and are the core operational roadways for achieving ore body blasting and mining. Ore extraction roadways, located in the lower part of the mining unit, are primarily used to transport blasted ore out of the mining area, serving as the ore extraction channel. Connecting roadways connect the drilling and ore extraction roadways within the same mining unit, achieving spatial connectivity and operational linkage between the various functional roadways, ensuring the continuity of mining operations.

[0043] In this embodiment, the core of the overall mining plan for a gently dipping, thick ore body is to first divide the mining area into units perpendicular to the ore body's strike based on its occurrence characteristics. Simultaneously, considering the efficiency, safety, and engineering feasibility requirements of ore body mining, appropriate mining structure parameters suitable for the ore body's occurrence conditions are determined, clarifying the basic mining layout of each mining unit. Then, starting from one wing where the ore body mining operation begins, a suitable number of adjacent mining units are selected and combined to form the first mining unit, which serves as the first overall mining operation unit, realizing the zonal planning and mining of the ore body. Finally, based on the three-dimensional ore body spatial range of the first mining unit, and considering the full-process mining requirements of ore body blasting, ore extraction, and operational linkage within the mining unit, the spatial location and connection relationships of each functional roadway are planned comprehensively. Drilling roadways, ore extraction roadways, and connecting roadways are constructed sequentially. Each roadway is spatially interconnected, functionally distinct, and collaboratively cooperates, ultimately constructing a collaborative engineering layout suitable for the overall mining operation of the first mining unit, laying the engineering foundation for subsequent zonal collaborative mining of the ore body.

[0044] This technical process, through the scientific division of mining units and the determination of mining structure parameters, enables the rational zoning planning of gently dipping, thick ore bodies, breaking away from the traditional extensive mining model that focuses on the overall ore body. This provides a foundation for subsequent differentiated mining by zone. Furthermore, by using the first mining unit as the core for collaborative engineering layout construction, the layout of drilling, ore extraction, and connecting roadways can be precisely adapted to the spatial characteristics of the ore body. The collaborative layout of each roadway can effectively coordinate the engineering needs of each stage of mining operations, significantly optimize the layout of preparatory engineering, reduce unnecessary preparatory work, and simultaneously achieve operational linkage and spatial complementarity among functional roadways, ensuring the continuity and efficiency of subsequent mining operations. In addition, the standardized mining unit division and mining unit assembly model can provide a unified basis for the rapid assembly and engineering layout replication of similar mining units, enabling the orderly and cyclical advancement of mining from one wing to the other. From the perspective of engineering planning and layout, this lays a solid foundation for the efficient, low-loss, and safe mining of gently dipping, thick ore bodies.

[0045] Step 120: Taking the first mining unit as the smallest working unit, the ore body in the mining area within the first mining unit is divided into the central main ore body area and the upper and lower hanging triangle areas. The zoned coordinated mining process is used to carry out zoned coordinated mining of the central main ore body area and the upper and lower hanging triangle areas.

[0046] The smallest operational unit refers to the smallest overall mining operation unit designated to achieve coordinated mining of ore body zones. This unit coordinates the entire process of ore body zoning, process adaptation, and mining construction, serving as the core operational carrier for ore body mining and ensuring the systematic and continuous nature of the mining procedures. The central main ore body area is the core ore body region within the first mining unit, characterized by uniform thickness and no obvious gradual thinning. It is the main resource-bearing area for ore body mining and is suitable for large-scale, high-efficiency blasting mining techniques. The footwall triangular area is the central part of the first mining unit... The main ore body area extends upwards and downwards, forming a triangular ore body region with a gradually thinning ore body thickness. This region is divided into the hanging wall triangle and the footwall triangle, areas prone to residue buildup and difficult to recover during ore body mining, requiring sophisticated mining techniques. The zoned coordinated mining technique addresses the spatial morphology and resource occurrence characteristics of different ore body areas by tailoring appropriate mining methods to each area. Furthermore, the mining procedures in each area form a coordinated overall mining process system in terms of construction sequence, engineering utilization, and operational linkage, achieving efficient and coordinated mining of ore bodies in different areas. Specifically, the zoned coordinated mining technique may include: large-scale mining using medium-deep hole blasting in the central main ore body area, and refined mining using the large-path method in the hanging wall and footwall triangles.

[0047] In this embodiment of the disclosure, the first mining unit can be constructed as the smallest working unit for ore body mining. Based on the natural occurrence and thickness distribution characteristics of the ore body in three-dimensional space, the mining area within the mining unit is spatially partitioned and planned. The central main ore body area with uniform thickness and the upper and lower triangular areas with gradually thinning wall rock are precisely delineated. This breaks the traditional single-process mining mode. The mining process is adapted to the characteristics of the ore body in the two areas to form a partitioned collaborative mining process. During the construction process, the mining sequence of the two areas is planned in a coordinated manner to realize the connection and linkage of mining processes in each area. In this way, the overall partitioned collaborative mining operation of the central main ore body area and the upper and lower triangular areas within the first mining unit can be carried out to ensure that the mining of ore body areas with different characteristics can be adapted.

[0048] By using the first mining unit as the smallest operational unit to conduct orebody zoning and mining operations, refined overall planning of orebody mining can be achieved, making the selection and construction of mining technology more targeted. Delineating the central main orebody area and the hanging wall and footwall triangular areas based on the natural occurrence characteristics of the orebody allows for precise matching of the mining needs of different areas, laying the foundation for differentiated technology adaptation. The application of zoning and collaborative mining technology enables the central main orebody area to be adapted to efficient large-scale mining technology, ensuring the overall mining efficiency of the orebody, while the hanging wall and footwall triangular areas can be adapted to refined mining technology, reducing ore residue and dilution, and improving resource recovery rate. Simultaneously, the coordinated operation of mining processes in each area can effectively connect the mining process, avoiding process conflicts. Under the premise of ensuring mining safety, it achieves dual optimization of mining efficiency and resource recovery in orebody areas with different characteristics, solving the problem of traditional mining's difficulty in balancing efficiency and recovery rate from the perspectives of technology adaptation and process coordination.

[0049] Step 130: Based on the first mining unit, subsequent mining units are built according to the same mining structure parameters. While completing the mining of a part of the first mining unit, the zoned collaborative mining process is replicated to the corresponding area of ​​the next mining unit to carry out mining operations. Spatial cross-construction between mining areas is achieved by relying on the collaborative engineering layout.

[0050] Among them, the subsequent mining units are mining units that are sequentially built in the mining direction of the first mining unit, based on the mining structure parameters of the first mining unit as a unified standard, and are used to carry out cyclic advance mining of the ore body. They form a continuous ore body mining operation unit system with the first mining unit. Spatial cross construction is a construction method that coordinates the mining sequence between different mining units and carries out mining operations in a certain area of ​​the previous mining unit and mining operations in the corresponding area of ​​the next mining unit simultaneously, breaking the linear operation mode of a single mining unit.

[0051] In this embodiment of the disclosure, the first mining unit that has been completed and put into operation can be used as a reference. Subsequent mining units can be constructed in an orderly manner in the direction of ore body mining extension, following the determined stope structure parameters. The standardization and uniformity of the stope layout of each mining unit can be maintained. At the same time, relying on the collaborative engineering layout of drilling, ore extraction and connecting roadways formed in the early stage for the construction of the first mining unit, the zonal collaborative mining technology applicable to the first mining unit can be directly replicated and applied to the corresponding ore body area of ​​the subsequent mining units. During the construction process, the mining sequence can be controlled in a coordinated manner. While completing the mining operation of a certain part of the ore body area of ​​the first mining unit, the zonal collaborative mining operation of the corresponding ore body area can be carried out simultaneously in the subsequent mining units. With the help of the reusable collaborative engineering layout between each mining unit, the cross construction of different mining units in the ore body space can be realized, and the orderly advancement of the ore body from the mining starting wing to the other wing can be promoted.

[0052] This technical step, by constructing subsequent mining units based on the stope structure parameters of the first mining unit, standardizes the stope layout of each mining unit, significantly reducing the planning and construction costs of subsequent mining units. It also provides a unified foundation for the replication and application of the process. Directly replicating the zoned collaborative mining process to subsequent mining units avoids the cumbersome process of re-adapting the process to different mining units, ensuring the consistency and efficiency of the overall mining process. Furthermore, the implementation of cross-site construction between mining areas breaks the traditional linear operation mode of sequential mining from a single mining unit. Through collaborative engineering layout, simultaneous mining operations in different areas of multiple mining units can be carried out, effectively improving the overall mining efficiency and production capacity of the ore body. Simultaneously, the cross-mining reuse of the collaborative engineering layout further reduces the repetitive investment in mining and cutting work. While optimizing the connection of mining procedures, it achieves efficient utilization of engineering resources, ensuring the efficiency and continuity of the cyclical advancement mining of gently dipping, thick ore bodies from the perspectives of mining layout and construction sequence.

[0053] Step 140: After completing the mining of each area within the first mining unit, subsequent backfilling shall be carried out within the specified time. A guideway shall be reserved as a free face for subsequent mining. The drilling roadways, ore extraction roadways and connecting roadways formed during construction shall be reused as working spaces and ore extraction channels for subsequent mining, thus completing the cyclic mining of the ore body from one wing to the other.

[0054] Subsequent backfilling refers to the backfilling operation carried out on the voids formed after the completion of all mining operations in a certain area of ​​the ore body. It is a key process for controlling the risks of the voids after mining, ensuring the stability of the surrounding rock and the safety of subsequent mining, and providing a safe working environment for subsequent ore body mining. The access shaft is a vertical passage specially reserved before backfilling in the mining area, connecting the upper and lower roadways. It serves as a free face for blasting during subsequent mining of adjacent ore body areas, providing compensation space and working channels for subsequent blasting operations. Roadway reuse involves directly applying various functional roadways formed during the mining construction of the first mining unit to the mining operations of subsequent mining units without the need for reconstruction, thus achieving the reuse of engineering resources. Circular mining is based on the mining technology and engineering layout of the first mining unit, starting from one wing of the ore body, sequentially constructing subsequent mining units and carrying out mining operations. After completing the mining of one mining unit, the process continues to the next mining unit until the continuous and orderly mining of the entire ore body from one wing to the other is achieved.

[0055] In this embodiment of the present disclosure, after all mining operations in the central main ore body area, the hanging wall and footwall triangular areas, and other ore body areas within the first mining unit are completed, subsequent backfilling operations can be carried out in each post-mining void according to the predetermined time requirements. At the same time, a guide shaft is reserved at a designated location to provide the necessary free face for subsequent blasting mining of the ore body area. On this basis, no new roadway engineering is constructed. The drilling roadways, ore extraction roadways, and connecting roadways constructed in the previous mining for the first mining unit are directly used for the mining operations of subsequent mining units. They serve as drilling operation spaces, ore transportation channels, and linkage channels for various functional roadways, respectively. Relying on standardized mining technology and a reusable roadway engineering system, the mining of subsequent mining units is advanced sequentially from the mining starting wing of the ore body, ultimately realizing the cyclic mining of the entire gently dipping thick ore body from one wing to the other.

[0056] This technical step, by carrying out subsequent backfilling at a specified time after mining completion, can timely manage the risks of the post-mining void, effectively prevent the instability of the hanging wall, fundamentally ensure the overall safety of ore body mining, and lay a safe operational foundation for subsequent cyclic mining. The reserved access shafts can provide reasonable free faces and compensation space for subsequent blasting operations in ore body mining, optimize the operating conditions of subsequent blasting mining, and ensure the efficiency and effectiveness of subsequent mining. The reuse of drilling roadways, ore extraction roadways, and connecting roadways can significantly reduce the amount of preparatory engineering construction in subsequent mining units, reduce the engineering costs and construction cycle of mining, and at the same time maintain the uniformity of the mining operation system of each mining unit, ensuring the smooth connection of processes during cyclic mining. Ultimately, through the coordinated cooperation of backfilling risk control, reserved free faces, and roadway reuse, continuous cyclic mining of the ore body from one wing to the other can be achieved. Under the premise of ensuring mining safety, the overall mining efficiency and comprehensive economic benefits of the ore body are greatly improved, and the synergistic optimization of mining safety, efficiency, and cost is achieved.

[0057] In summary, the backfilling mining method for gently dipping thick ore bodies provided in this application can divide the mining area into units perpendicular to the ore body strike and form mining units, constructing a coordinated engineering layout of drilling roadways, ore extraction roadways, and connecting roadways. The ore body is divided into a central main ore body area and upper and lower hanging triangular areas, with the mining unit as the smallest working unit. The method adopts a zoned coordinated mining process of large-scale mining of the central main ore body by medium-deep hole blasting and fine mining of the upper and lower hanging triangular areas by large-path method. At the same time, subsequent mining units are formed based on unified mining area structural parameters to achieve spatial cross-construction between multiple mining areas. After mining, backfilling is carried out in a timely manner, and the existing roadway engineering is reused to complete the cyclic mining of the ore body from one wing to the other. This scheme leverages the scale advantage of deep-hole blasting to maintain high mining efficiency in the central thick ore body, while also adapting to the gradually varying thickness of the ore body in the hanging wall and footwall triangular areas through the fine mining of the large-path method. This effectively avoids ore loss and dilution, as well as ore body residue. Furthermore, the optimized preparatory engineering layout significantly reduces the amount of preparatory work and simplifies operational cycles. The cross-construction of multiple mining areas and the reuse of roadway engineering further enhance overall mining efficiency. Timely post-mining and roadway roof support effectively manage post-mining void risks and prevent instability of the hanging wall. Ultimately, based on the optimized preparatory engineering layout, it simultaneously achieves efficient, low-loss, and safe mining of the central main area of ​​the gently dipping thick ore body and the residual triangular areas in the hanging wall and footwall, synergistically achieving mining efficiency, resource recovery rate, and mining safety.

[0058] Furthermore, as a refinement and extension of the specific implementation of the above embodiments, and to fully illustrate the implementation of this embodiment, this embodiment also provides another filling mining method for gently dipping thick ore bodies, such as... Figure 2 As shown, the method includes:

[0059] Step 210: Divide the mining area into units perpendicular to the ore body strike and determine the mining area structure parameters. Based on the mining area range defined by the mining area structure parameters, take multiple adjacent mining area units as the first mining unit starting from one wing of the ore body. Based on the ore body space range of the first mining unit, construct a coordinated engineering layout of drilling roadways, ore extraction roadways and connecting roadways.

[0060] Among them, the stope structure parameters are the core dimensional indicators determined for the stope unit to achieve efficient and safe mining of the ore body. These may include stope length of 50-80m, stage height of 20-30m, and stope width, which is the horizontal thickness of the ore body.

[0061] In this embodiment, the division of the mining area into units can be completed first based on the occurrence characteristics of the gently dipping, thick ore body perpendicular to the ore body strike. At the same time, the appropriate mining area structure parameters can be determined in combination with the efficiency, safety and engineering feasibility requirements of ore body mining, and the basic mining layout of each mining area unit can be clarified. Then, multiple (e.g., 3) adjacent mining area units can be selected from one wing where the ore body mining starts to form the first mining unit, and the overall mining space of the ore body can be defined. Subsequently, based on the strict criteria of the ore body space, in the ore body range of the mining areas on both sides of the first mining unit, a connecting roadway can be constructed from the stage transport roadway A1 to the junction of the ore body and the hanging wall at the middle position of the upper and lower parts of the mining area, forming a spatial layout in which the upper drilling roadway A2 and the lower ore extraction roadway A3 correspond one-to-one. The excavation of the upper drilling roadway A2 and the lower ore extraction roadway A3 does not exceed the ore body space range of the first mining unit. During the excavation of the upper rock drilling roadway A2, resin anchor bolts were used to complete the first pre-control roof support A8 and the second pre-control roof support A14 for the roadway roof. The spacing between the anchor bolts was no more than 1.2m × 1.2m, and the prestress was no less than 80kN, providing safe roof conditions for all subsequent operations. Starting from the ore-rock interface at the end of the lower ore extraction roadway A3 in both mining areas, a connecting roadway A6 is excavated along the ore body strike within the ore body space of the first mining unit, connecting the outer and inner mining areas. The roadway cross-section should preferably be a three-centered arch shape of 4.2m × 3.8m, so that the connecting roadway A6 connecting the outer and inner mining areas of the first mining unit can be interconnected with the previously constructed upper drilling roadway A2 and lower ore extraction roadway A3. This will ultimately form a coordinated engineering layout of drilling, ore extraction, and connecting roadways that meets the overall mining needs of the first mining unit, laying a solid engineering foundation for subsequent zoned coordinated mining of the ore body.

[0062] Accordingly, when constructing a coordinated engineering layout of drilling roadways, ore extraction roadways, and connecting roadways based on the ore body space of the first mining unit, the implementation steps may include: within the ore body space of the two mining areas on both sides of the first mining unit, at the middle position of the upper and lower parts of the mining area, constructing a connecting roadway from the stage transport roadway to the boundary between the ore body and the hanging wall, forming a one-to-one correspondence between the upper drilling roadway and the lower ore extraction roadway, and the excavation boundaries of the drilling roadway and the ore extraction roadway do not exceed the ore body space of the first mining unit; starting from the ore-rock boundary at the end of the lower ore extraction roadway on both sides of the first mining unit, excavating a connecting roadway in opposite directions along the ore body strike within the ore body space of the first mining unit, forming a coordinated engineering layout with the drilling roadway and the ore extraction roadway. The ore body space refers to the complete boundary of the ore body covered by the first mining unit in three-dimensional space, including the horizontal extension, vertical occurrence range, and boundary with the surrounding rock of the ore body, serving as the spatial basis for roadway construction.

[0063] This technical process, through the scientific division of mining units and the determination of mining structure parameters, enables the rational zoning planning of gently dipping, thick ore bodies, breaking away from the traditional extensive mining model and providing a unified technical basis for subsequent differentiated mining and standardized roadway construction. Using the first mining unit as the core, roadway construction is carried out strictly according to its ore body spatial range, ensuring that the layout of drilling roadways and ore extraction roadways precisely matches the ore body's occurrence characteristics. This one-to-one spatial layout allows for efficient connection between blasting and ore extraction operations. Simultaneously, the digging of connecting roadways in opposite directions enables spatial connectivity between various functional roadways, constructing a... The collaborative engineering layout coordinates the needs of all aspects of mining operations, including rock drilling, ore extraction, and linkage. It can significantly optimize the layout of the preparatory engineering, reduce unnecessary preparatory engineering work and roadway excavation costs. In addition, the roadway excavation boundary is strictly limited to the space of the ore body in the first mining unit, which can effectively avoid excessive excavation of the surrounding rock, reduce the risk of ore dilution, and provide a standardized spatial boundary for cross-construction and engineering reuse between subsequent mining areas. From the perspective of engineering planning and construction layout, it ensures the efficiency, safety and continuity of mining gently dipping thick ore bodies, and lays a solid engineering foundation for the implementation of subsequent zoned collaborative mining technology.

[0064] Step 220: Taking the first mining unit as the smallest working unit, the ore body in the mining area within the first mining unit is divided into the central main ore body area and the upper and lower triangular areas. The zoned coordinated mining process is used to carry out zoned coordinated mining of the central main ore body area and the upper and lower triangular areas. The zoned coordinated mining process includes: using medium-deep hole blasting for large-scale mining of the central main ore body area, and using the large-path method for fine mining of the upper and lower triangular areas.

[0065] In this embodiment of the present disclosure, when the first mining unit is taken as the smallest working unit and the ore body in the mining area within the first mining unit is divided into the central main ore body area and the hanging wall and footwall triangular areas, the first mining unit that has been completed in the early stage can be taken as the smallest working unit for ore body mining. Based on the natural occurrence characteristics and thickness distribution law of the ore body in the three-dimensional space of the mining area within the first mining unit, the core ore body area with uniform thickness and no gradual thinning in the three-dimensional space of the mining area is first accurately delineated as the central main ore body area. Then, based on this, the triangular residual ore body areas in the three-dimensional space of the mining area formed by the extension of the central main ore body area to the hanging wall and footwall surrounding rocks, with the ore body thickness gradually thinning, are correspondingly delineated as the hanging wall triangular area and the footwall triangular area. Through this spatial zoning method, the precise division of the mining area ore body in the first mining unit into the central main ore body area and the hanging wall and footwall triangular areas is completed, laying the spatial division foundation for subsequent targeted adaptation of mining technology.

[0066] Accordingly, the implementation steps may include: defining the core ore body area with uniform thickness and no gradual thinning in the three-dimensional space of the first mining unit as the central main ore body area; defining the triangular residual ore body area in the three-dimensional space of the first mining unit, which extends from the central main ore body area to the hanging wall and has a gradually thinning shape, as the hanging wall triangle area and the footwall triangle area, wherein the hanging wall triangle area is the triangular ore body area of ​​the central main ore body area that gradually thins towards the hanging wall and the footwall triangle area is the triangular ore body area of ​​the central main ore body area that gradually thins towards the footwall and the footwall triangle area.

[0067] This technical step precisely delineates the central main ore body area and the hanging wall and footwall triangular areas based on the thickness and morphological characteristics of the naturally occurring ore body. It objectively matches the spatial morphological characteristics of gently dipping, thick ore bodies, effectively distinguishing easily mined core ore body areas from difficult-to-recover residual ore body areas, providing a clear spatial basis for adapting subsequent differentiated mining processes. Simultaneously, further subdividing the hanging wall and footwall triangular areas into hanging wall and footwall triangular areas enables precise ore body zoning. This allows triangular residual ore bodies of different shapes and locations to be matched with corresponding refined mining processes. From a spatial division perspective, it avoids the adaptation defects of traditional single mining processes to different ore body shapes. This not only creates conditions for large-scale, efficient mining in the central main ore body area but also ensures low-lean, refined mining in the hanging wall and footwall triangular areas, fundamentally solving the problem of difficulty in balancing efficiency and recovery rate in traditional mining, and laying a solid spatial division foundation for the implementation of subsequent zoned collaborative mining processes.

[0068] In this embodiment of the present disclosure, when using medium-deep hole blasting for large-scale mining of the central main ore body area, medium-deep hole blasting can be carried out in the central main ore body area of ​​the first mining unit. First, a cutting riser is constructed in the middle of the outermost stope of the first mining unit to achieve vertical connection between the drilling roadway and the ore extraction roadway. Then, using this cutting riser as the initial free surface, blasting is performed to form a cutting groove, establishing the compensation space required for medium-deep hole blasting. The process layout and operation flow of this process can be referred to... Figure 3 The diagram illustrates the overall process of cutting groove formation, borehole layout, blasting sequence, and ore extraction path in the initial mining of medium-deep holes. Subsequently, blasting is carried out from the drilling roadway down to the fan-shaped medium-deep holes and auxiliary horizontal parallel shallow holes, utilizing the compensation space of the cutting groove. The main body of the hanging wall in the central ore body area, as well as the ore on both sides of the drilling roadway and the ore extraction roadway, are caving away. All caving ore is transported out through the connecting roadway via a retreat mining method. After the mining of this area is completed, subsequent backfilling is carried out within a specified time (e.g., within 48 hours), and a guide shaft is reserved at the cutting groove location to provide a free blasting face for the mining of the footwall ore body.

[0069] like Figure 3As shown, the specific implementation process is as follows: First, using the stage transport roadway A1 as the engineering foundation, a cutting riser A4 is constructed in the middle of the outer stope X1 of the first mining unit X. Through blasting, the cutting riser A4 forms a cutting groove A5, providing compensation space and an initial free surface for subsequent medium-deep hole blasting. Throughout the construction and blasting process, the roof of the upper drilling roadway A2 is protected by the first pre-controlled roof support A8 to ensure the safety of roadway operations. Subsequently, from the upper drilling roadway A2, downward fan-shaped medium-deep holes A9 and horizontal parallel shallow holes are constructed, utilizing the compensation space of the cutting groove A5 to implement... Blasting was used to break up the main body of the ore body in the middle and the ore on both sides of the upper drilling roadway A2. Then, from the lower ore extraction roadway A3, the upper fan-shaped medium-deep hole A10 and the horizontal parallel shallow hole A11 were constructed to break up and mine the main body of the hanging wall triangle area and the ore on both sides of the lower ore extraction roadway A3. All the broken ore was uniformly withdrawn and transported to the stage transport roadway A1 through the connecting roadway A6 that connects the outer stope and the inner stope of the first mining unit. After the mining of this area was completed, the subsequent backfilling was completed within 48 hours, and a follow-up well A13 was reserved at the cutting groove A5 to provide a blasting free face for subsequent mining operations.

[0070] Next, using the reserved access shaft as the new free face for blasting, continue to lay out fan-shaped medium-deep holes in the drilling roadway, and lay horizontal parallel shallow holes on both sides of the ore extraction roadway and drilling roadway to the preset mining boundary before blasting. The main body of the footwall side of the central main ore body area is then mined. The ore is transported out through the bottom ore extraction roadway. After the footwall side mining is completed, subsequent backfilling is also completed within the specified time. The mining process and layout of this footwall side ore body can be referenced. Figure 4 The diagram shows the deep-hole retreat mining, blast hole layout, and ore extraction path with the runway riser as the free face.

[0071] like Figure 4As shown, the specific implementation process is as follows: taking the stage transport roadway A1 as the core foundation for engineering operations and ore transportation, relying on the upper drilling roadway A2 which was constructed in the early stage as the drilling operation space and the lower ore extraction roadway A3 as the ore extraction operation channel, and using the reserved access shaft A13 as the core blasting free face, a downward fan-shaped medium-deep hole A9 is constructed from the upper drilling roadway A2 towards the stage transport roadway A1 and blasting is carried out to withdraw the ore; at the same time, horizontal parallel shallow holes A11 are constructed and blasted on the inner wall of the ore extraction roadway A12 in the outer mining area of ​​the first mining unit and on both sides of the surrounding rock of the upper drilling roadway A2, and the ore around the roadway is thoroughly cleared to prevent ore residue from causing resource loss. The mining range of the main ore body in the footwall is strictly controlled to an economically reasonable position to avoid excessive mixing of surrounding rock and ore dilution. All the ore that was blasted and collapsed was collected in the ore extraction roadway A12 of the outer stope of the first mining unit and then transferred to the stage transport roadway A1 for off-site transportation. After all mining operations in this area were completed, the post-mining goaf was subsequently filled within 48 hours. Throughout this step, the roof of the upper drilling roadway A2 was protected by the first pre-controlled roof support A8 to ensure the safety of roadway operations. This step was carried out simultaneously with the mining of the main ore body on the hanging wall of the outer stope Y1 of the second mining unit Y and the ore body in the triangular area of ​​the hanging wall of the second mining unit Y. During the synchronous operation, the connecting roadway A6 connecting the outer stope and the inner stope of the first mining unit was reused to realize the engineering linkage and ore transfer between the stopes, forming a construction pattern of multi-area collaborative operation.

[0072] Finally, after the main ore body area in the middle of both sides of the first mining unit has been completely mined and backfilled, the drilling roadways, ore extraction roadways, and cutting slots will be reconstructed in the middle mining area. Using the aforementioned medium-deep hole blasting technology, mining will be gradually withdrawn towards the stage transport roadways to complete the mining of the main ore body area in the middle mining area of ​​the first mining unit. After the mining operation is completed, subsequent backfilling will be carried out within the specified time. The roadway construction and medium-deep hole mining technology for this middle mining area can be referenced. Figure 5 The figure shows the construction of a new roadway and medium-deep hole mining in the X2 stope in the middle of the first mining unit, as well as the synchronous mining of the remaining ore body in the footwall triangle area of ​​the second mining unit, ultimately achieving large-scale medium-deep hole blasting mining of the entire main ore body area in the middle of the first mining unit.

[0073] like Figure 5As shown, the specific implementation process is as follows: After the outer stope X1 and the inner stope X3 of the first mining unit are fully filled, a new upper connecting roadway A20 for the middle stope of the first mining unit is constructed first in the middle stope X2 to establish a connection channel between this stope and the overall mining area. Simultaneously, the drilling roadway A21 and the ore extraction roadway A22 of the middle stope of the first mining unit are excavated. During the entire construction process, pre-controlled roof support is implemented for the drilling roadway A21 in the middle stope of the first mining unit to ensure the safety of subsequent drilling operations. Subsequently, a cutting riser is constructed at the end of the ore extraction roadway A22 in the middle stope of the first mining unit, and a cutting groove is formed by blasting, so that the cutting groove is vertically connected to the drilling roadway A21 in the middle stope of the first mining unit. To construct compensation space and initial free face for medium-deep hole blasting, downward fan-shaped medium-deep holes A9 and horizontal parallel shallow holes A11 were arranged in the rock drilling roadway A21 in the middle of the first mining unit. At the same time, horizontal parallel shallow holes A11 were arranged in the ore extraction roadway A22 in the middle of the first mining unit. Based on the compensation space of the cutting groove, blasting and caving were carried out to recover ore, and mining was gradually withdrawn towards the stage transport roadway. The remaining ore on both sides of the roadway was completely cleared. After the entire area was recovered, subsequent backfilling was completed within 48 hours. While carrying out the recovery operation of the X2 ore body in the middle of the first mining unit, the remaining ore body in the footwall triangle area of ​​the second mining unit Y was simultaneously finely recovered and backfilled, realizing spatial cross-construction of different ore body areas in the two mining units, which greatly improved the overall mining efficiency.

[0074] Accordingly, the implementation steps may include: constructing a cutting riser in the middle of the outermost stope of the first mining unit, connecting the drilling roadway and the ore extraction roadway; using the cutting riser as the initial free surface, blasting is carried out to form a cutting groove, which serves as compensation space for medium-deep hole blasting; constructing downward fan-shaped medium-deep holes and auxiliary horizontal parallel shallow holes from the drilling roadway, and blasting is carried out relying on the compensation space of the cutting groove to mine the main part of the hanging wall of the central main ore body area and the ore on both sides of the drilling roadway and the ore extraction roadway; the collapsed ore is withdrawn and transported out through the connecting roadway; after the mining of the hanging wall of the central main ore body area is completed, subsequent backfilling is completed within a preset time period, and a roadway is reserved at the location of the cutting groove. The process involves using the runway borehole as the blasting free face, arranging downward fan-shaped medium-deep holes in the drilling roadway, and horizontal parallel shallow holes on both sides of the ore extraction roadway and drilling roadway to the predetermined boundary before blasting. This process is used to mine the main body of the central ore body area on the footwall side. The ore is then transported out via the bottom ore extraction roadway. After the mining of the footwall side of the central ore body area is completed, subsequent backfilling is completed within a predetermined time period. After the mining and backfilling of the stopes on both sides of the first mining unit are completed, drilling roadways, ore extraction roadways, and cutting grooves are constructed in the central stope. The medium-deep hole blasting process is used to mine the central ore body area towards the stage transport roadway. After mining is completed, subsequent backfilling is completed within a predetermined time period. The predetermined time period specifically refers to the fixed time requirement for subsequent backfilling after the mining of each area of ​​the ore body is completed. It is a unified process time parameter to ensure mining safety and control the risk of post-mining voids; for example, 48 hours can be selected.

[0075] This technical step involves creating a cutting groove through the construction of a raised shaft to build a dedicated compensation space. This effectively eliminates the clamping effect of deep-hole blasting, ensuring the large-scale caving effect of thick ore bodies and significantly improving the recovery efficiency and production capacity of the central main ore body area. The combination of downward fan-shaped deep-holes and horizontal parallel shallow holes enables large-area caving of the ore body while also selectively clearing residual ore from both sides of the roadway. Simultaneously, by pre-setting mining boundaries to prevent the mixing of surrounding rock, it effectively controls ore dilution losses and improves resource recovery rates. The pre-reserved raised shafts can replace the process of re-constructing and cutting raised shafts, significantly reducing the amount and cost of preparatory work and shortening the overall mining operation cycle. During the recovery process, the following methods are employed... The withdrawal and extraction method ensures that ore extraction operations are always carried out in a stable engineering environment. Timely backfilling after the mining of each area is completed can effectively control the risk of post-mining voids, stabilize the surrounding rock and roadway roof, and fundamentally guarantee the safety of mining operations. The central mining area adopts a unified medium-deep hole blasting process for withdrawal and extraction, which can achieve standardization and normalization of mining technology, ensure the continuity and uniformity of mining operations in the central main ore body area of ​​the first mining unit. At the same time, the standardized process system can provide a unified implementation basis for the mining of subsequent mining units, achieve synergistic improvement in ore body mining efficiency, resource recovery rate and mining safety, and also lay a safe and efficient operational foundation for the fine mining of the upper and lower triangle areas.

[0076] In this embodiment of the disclosure, fine mining using the large-path method is carried out in the upper and lower wall triangle areas of the first mining unit. While mining the upper wall side of the central main ore body area, the main body of the upper wall triangle area can be simultaneously mined by blasting from the ore extraction roadway upwards through fan-shaped deep holes and horizontal parallel shallow holes, and the foundation ore on both sides of the ore extraction roadway is cleared. The caving ore is then transported out via connecting roadways. Subsequently, the remaining ore body in the upper wall triangle area is spatially divided into layers and approaches. The process layout and mining mode of this process can be referenced. Figure 6 This diagram illustrates three layered approach modes—single-layer, double-layer, and triple-layer—for the remaining ore body in the hanging wall triangle area, along with an alternating mining layout. Starting from the connecting roadway, horizontal strip approaches are defined along the ore extraction roadway outwards from the ore body. Vertically, multiple approaches are also defined, forming a layered and segmented three-dimensional mining unit. The mining area covers the entire remaining ore body in the hanging wall triangle area between the ore extraction roadways on both sides of the first mining unit. For the single-layer approach, bidirectional, opposite-side tunneling is used for mining, combined with shallow-hole blasting to break up the ore body. The ore is then uniformly withdrawn and transported out via the connecting roadway and the inner ore extraction roadway of the first mining unit. For multi-level access routes, the lower access route is mined first to create free space. The collapsed ore is gathered into a slag heap and steep slope to serve as the upper working channel. After the slag is removed and the roof is lifted, the upper access route is mined by roadway excavation combined with shallow hole blasting, and the roof is pre-controlled and supported simultaneously. Then, relying on the upper space, the lower remaining ore body is mined by downward parallel shallow hole blasting. The ore is removed and transported out through the connecting roadway and the ore exit roadway inside the first mining unit. The right access route of the connecting roadway is mined in the order of one mining every other day and backfilled in a timely manner. The ore body in the small triangular area on the left is mined by lateral horizontal parallel shallow hole blasting in the connecting roadway. The ore is directly transported out through the connecting roadway.

[0077] like Figure 6As shown, the specific implementation process is as follows: For the single-layer approach A23, the connecting roadway A6, which connects the outer and inner mining areas of the first mining unit, serves as the core connecting channel. Bidirectional, side-by-side roadway excavation is implemented using the ore extraction roadways of the outer mining area X1 and the inner mining area X3 of the first mining unit. The caving ore is uniformly removed and transported out via the connecting roadway A6 and the ore extraction roadway A19 of the inner mining area of ​​the first mining unit. For the double-layer approach A24, roadway excavation is first used to mine the lower layer, and the blasted ore is gathered into a steep slope slag heap. The upper working passage is formed, and then blast holes are arranged using the slag heap to access the upper layer. During the upper layer excavation, the second pre-controlled roof support A14 is simultaneously implemented to ensure operational safety. A roadway excavation combined with shallow hole blasting is used for mining. After the upper layer mining is completed, the remaining ore body in the lower layer is blasted using the upper layer space. The ore is transported out through the ore extraction roadway A19 inside the first mining unit. The three-layer access roadway A25 is implemented with two slag heaping roof processes. The first slag heaping roof collapses the second and third layers of ore body to the second layer. The second slag heaping roof enters the third layer. During the excavation of the third layer, the second pre-controlled roof is implemented simultaneously. Support A14 employs a combination of tunnel excavation and shallow-hole blasting for mining. After the third layer is mined, downward parallel shallow holes are arranged in the upper space to cavitate and mine the first and second layers of ore together. The ore is also transported out through the ore extraction roadway A19 inside the first mining unit. During the mining process, the layered and branched ore body on the right side of the connecting roadway A6, which connects the outer and inner mining areas of the first mining unit, is mined according to the principle of alternating mining and timely backfilling. The ore body in the small triangular area on the left side is directly mined by lateral horizontal parallel blasting in the connecting roadway A6, which connects the outer and inner mining areas of the first mining unit. The ore is transported directly out through the connecting roadway A6, which connects the outer and inner mining areas of the first mining unit. The entire process relies on the pre-reserved access shaft A13 to provide a free blasting face for the overall mining operation. The ore extraction roadway A12 in the outer mining area of ​​the first mining unit serves as an auxiliary operation channel. After all the remaining ore bodies in the hanging wall triangle area on both sides of the connecting roadway A6 connecting the outer and inner mining areas of the first mining unit have been mined and backfilled, the connecting roadway A6 connecting the outer and inner mining areas of the first mining unit will be backfilled for the final stage, so as to achieve the refined recovery of the ore bodies in this area.

[0078] After the main ore body in the footwall of the outer stope of the first mining unit is mined, the main ore body in the footwall of the inner stope of the first mining unit will be mined. This process can be referenced. Figure 7 The diagram illustrates the mining process of the main ore body on the footwall side of the inner stope of the first mining unit. Its mining method is consistent with that of the main ore body on the footwall of the outer stope, both employing medium-deep hole blasting mining with the free face of the inclined shaft, thus clearing the operational space for refined mining of the footwall triangular area. For example... Figure 7As shown, the specific implementation process is as follows: During the main ore body mining construction on the footwall side of the X3 stope within the first mining unit, the previously reserved access shaft A13 is used as the core blasting free face. Downward fan-shaped medium-deep holes A9 are arranged from the upper drilling roadway A2 downwards. Simultaneously, horizontal parallel shallow holes A11 are arranged on both sides of the corresponding ore extraction roadway and the upper drilling roadway A2. Medium-deep hole retreat operations are carried out towards the stage haulage roadway A1 and the lower stage haulage roadway A18. The blast hole layout boundaries are strictly controlled to an economically reasonable position to prevent... Excessive mixing of surrounding rock caused ore dilution. The ore mined in this area was transported out through the bottom ore extraction roadway by the withdrawal method. After the mining operation was completed, the post-mining void was subsequently filled within 48 hours. The inner stope X3 of the first mining unit also served as the outer stope Y1 of the second mining unit. Relying on the connecting roadway A17 to connect the stage transport roadway A1, the lower stage transport roadway A18, and various engineering roadways, the engineering linkage and ore transfer between the roadways were realized, laying a solid engineering connection foundation for the subsequent overall mining operation of the second mining unit Y.

[0079] For the lower triangle area, the modular mining process can be referenced. Figure 8 The diagram illustrates the two orebody modules, thick and thin, in the lower triangular area, divided by orebody thickness, and their corresponding differentiated mining techniques. The orebody is divided into an inner, thicker module and an outer, thinner module, with the orebody thickness less than or equal to the height of a single access road. For the inner, thicker module, the process begins by constructing the connecting roadway from the stage haulage roadway to the lowest point of the orebody in that module. Then, the drilling roadway is advanced in opposite directions along the boundary of the backfill body to form a through access roadway. During the excavation, the roof is pre-controlled simultaneously. Finally, using the through access roadway as the working space, downward parallel blast holes are constructed. Blasting mining was implemented, and multiple access routes were arranged based on the rock drilling roadways for the thinner outer ore body modules. Each access route was a free face for opposing excavation mining, and the roof was pre-controlled simultaneously during the excavation process. After all the ore bodies of each layer and access route in the hanging wall triangle area and each module in the footwall triangle area were mined out, subsequent backfilling was carried out within the specified time. The ore that collapsed during the mining process was removed and transported out through connecting roadways, stope connecting roadways or rock drilling roadways. The connecting roadways were finally backfilled after all the ore bodies in the triangle areas on both sides were mined out.

[0080] like Figure 8As shown, the specific implementation process is as follows: For the thick ore body module A26, the starting point is first the stage haulage roadway A1, which is used as the construction starting point to excavate the connecting roadway A16 to the bottom of the triangular pillar in the footwall, and a dedicated ore extraction channel is built. Then, the drilling roadways from the outer stope X1 of the first longwall unit and the middle stope X2 of the first longwall unit are excavated in opposite directions, and pre-controlled roof support is implemented simultaneously. The access road after the breakthrough is used as the core working space, and downward parallel blast holes A15 are arranged to carry out blasting and caving mining. The caving ore is transferred through the connecting roadway A16 to the stage haulage roadway A1 for external transportation. After the ore extraction operation is completed, the area and Backfilling is carried out in a timely manner; for thin ore body module A27, the drilling roadways of the outer stope X1 and the inner stope X3 of the first mining unit are used as the construction support, and multiple approaches are arranged simultaneously and used as blasting free faces to carry out opposing mining. The second pre-controlled roof support A14 is constructed simultaneously throughout the mining process to ensure operational safety. The drilling roadways on both sides are directly used as the ore extraction path to achieve efficient ore transfer and mining. Through the combination of two modular approach technologies, thick ore body module A26 and thin ore body module A27, the remaining ore body in the footwall triangular area of ​​different thicknesses is adapted to complete the fine mining.

[0081] Accordingly, the implementation steps may include: simultaneously mining the upper side of the main ore body area in the middle, constructing fan-shaped medium-deep holes and horizontal parallel shallow holes from the ore extraction roadway, blasting and mining the main part of the upper triangular area and clearing the ore at the bottom of both sides of the ore extraction roadway, and transporting the collapsed ore out through the connecting roadway; dividing the remaining ore body in the upper triangular area into multiple layers vertically, dividing several approaches from the connecting roadway outwards along the ore body, based on the division results of the layered and approached sections, mining each layer and each approach area by section using a combination of roadway excavation and shallow hole blasting; dividing the lower triangular area into an inner thicker ore body module and an outer thinner ore body module, with the ore body thickness less than or equal to the height of a single approach as the boundary, and targeting the inner thicker ore body module... The process begins with the construction of the connecting roadway from the stage transport roadway to the lowest point of the ore body in the thicker inner ore body module. Then, the drilling roadway is used to excavate in opposite directions along the boundary of the backfill body to form a through roadway. During the excavation, the roof is pre-controlled simultaneously. The through roadway serves as the working space for constructing downward parallel blast holes and implementing blasting for backfilling. For the thinner outer ore body module, multiple roads are arranged based on the drilling roadway. Each roadway is a free face for opposite excavation and backfilling. During the excavation, the roof is pre-controlled simultaneously. After the ore body of each roadway in the hanging wall triangle area and each module in the hanging wall triangle area is backfilled within a preset time period, the collapsed ore is removed through the connecting roadway, the connecting roadway in the stope, or the drilling roadway. The connecting roadway is backfilled after the ore body in the triangle areas on both sides is backfilled.

[0082] Correspondingly, when dividing the remaining ore body in the hanging wall triangle into multiple layers vertically, and dividing it into several access roads from the connecting roadway outwards along the ore body, based on the layered and access roadway division results, and mining each layer and access roadway in a zone-by-zone manner using a combination of roadway excavation and shallow hole blasting, the implementation steps may include: starting from the connecting roadway and extending outwards along the ore body from the ore body, dividing the remaining ore body in the hanging wall triangle into several access roads horizontally and several layers of access roads vertically, forming a layered and striped access roadway division result, with each layer of access roads intersecting to form a three-dimensional mining unit, and the mining range being the entire remaining ore body in the hanging wall triangle between the ore body access roads on both sides of the first mining unit; for single-layer access roads with single horizontal lines and single vertical layers, bidirectional side-to-side roadway excavation mining is carried out on the single-layer access roadway using the ore body access roads on both sides, combined with shallow hole blasting to break up the ore body, breaking up the ore. The ore is uniformly withdrawn and transported out through the connecting roadway and the ore extraction roadway inside the first mining unit. For multi-level access roads with multiple vertical layers and several horizontal layers, the lower access roadway is first mined using a combination of roadway excavation and shallow hole blasting to create free space. The collapsed ore is then gathered into a slag heap and steep slope to serve as the working channel for the upper access roadway. After slag padding and roof lifting, the upper access roadway is mined using a combination of roadway excavation and shallow hole blasting with simultaneous pre-controlled roof support. Then, relying on the space of the upper access roadway, downward parallel shallow holes are constructed to blast and mine the remaining ore body of the lower access roadway. The collapsed ore is withdrawn and transported out through the connecting roadway and the ore extraction roadway inside the first mining unit. For the layered and segmented access roads on the right side of the connecting roadway, roadway excavation combined with shallow hole blasting is used for mining in an alternating order, and backfilling is carried out in a timely manner. For the small triangular area of ​​ore body on the left side of the connecting roadway, lateral horizontal parallel shallow hole blasting is arranged in the connecting roadway for mining. The collapsed ore is directly withdrawn and transported out through the connecting roadway.

[0083] This technical process employs a large-path approach for refined mining of the hanging wall and footwall triangular areas. By simultaneously mining the main ore body in the hanging wall triangular area with the main ore body in the central area, coordinated mining operations can be achieved, significantly improving overall mining efficiency. The remaining ore body in the hanging wall triangular area is divided into layers and approaches using a three-dimensional method, combining tunneling and shallow-hole blasting techniques, along with methods such as slag removal and alternating mining, precisely adapting to the gradually changing morphological characteristics of the ore body thickness. This effectively avoids ore residue, and differentiated mining on both sides of the connecting roadways further enhances the comprehensiveness of resource recovery. The footwall triangular area is modularly divided according to ore body thickness, allowing for differentiated mining processes for areas with different thicknesses. This enables targeted and efficient recovery of the ore body in the footwall triangular area, significantly improving the overall resource recovery rate. Pre-control is carried out simultaneously throughout the entire mining process. Top support effectively stabilizes the roof of the working space, and the retreat mining method ensures that mining operations are always carried out in a stable engineering environment, fundamentally guaranteeing the safety of refined mining construction. Timely backfilling after the completion of each mining area can effectively manage the risk of post-mining voids, stabilize the surrounding rock structure, and lay a safe foundation for subsequent ore body mining. The connecting roadways are backfilled after the mining of the triangular ore bodies on both sides is completed, which can maximize the reuse of the roadways and reduce the amount of preparatory engineering construction and the repetitive planning of mining paths. The application of the overall large-path method and the medium-deep hole blasting technology in the central main ore body area form a highly efficient synergy, which can not only solve the industry problem of difficult recovery of ore bodies in triangular areas, but also ensure mining efficiency and safety while controlling ore dilution loss and improving resource recovery rate, achieving efficient, low-dilution and safe mining of the entire area of ​​gently dipping thick ore bodies.

[0084] Step 230: Select two adjacent mining areas inside the first mining unit and the inner mining area of ​​the first mining unit, and construct the second mining unit according to the mining area structure parameters.

[0085] The second mining unit is a mining unit formed by selecting two adjacent mining areas inside the first mining unit and the inner mining area of ​​the first mining unit, based on the mining area structure parameters of the first mining unit. It is used for continuous mining of the ore body and is an important operational unit for cyclic mining of the ore body.

[0086] In this embodiment of the disclosure, while the first mining unit is carrying out ore body mining operations, the construction of the second mining unit can be initiated. The construction layout and execution logic of the second mining unit can be referred to... Figure 9 and Figure 10 , Figure 9 As a schematic diagram of the horizontal mining sequence, it shows the horizontal zoning of the mining area and the arrangement of the mining advance sequence, clearly demonstrating the spatial connection between the second mining unit and the first mining unit. Figure 10As a schematic diagram of cyclic advancement, it intuitively demonstrates the formation mode of the mining unit and the overlapping connection mechanism of adjacent units. In specific implementation, the ore body range within the first mining unit is first delineated, two adjacent mining areas within this range are selected, and then the inner mining area of ​​the first mining unit is included. The three together form the second mining unit. During the formation process, the mining area structure parameters determined by the first mining unit are strictly followed to maintain the uniformity of the size and layout standards of the mining area. At the same time, relying on the engineering layout of the drilling roadways, ore extraction roadways, connecting roadways, etc. already constructed in the first mining unit, the engineering system of the second mining unit is seamlessly connected with that of the first mining unit. There is no need to re-plan the core engineering layout. Finally, the standardized formation of the second mining unit is completed, laying the foundation for subsequent spatial cross-construction with the first mining unit and realizing the cyclic advancement mining of the ore body.

[0087] This technical procedure uses the stope structure parameters of the first mining unit as a unified standard, selecting two adjacent stopes and the inner stope within the first mining unit to form the second mining unit. This standardizes and regulates the layout of mining units, ensuring consistency in subsequent mining processes and engineering construction, and significantly reducing the planning and construction costs of the second mining unit. Furthermore, it allows for spatial overlap and connection between adjacent mining units, creating conditions for cross-construction between stopes, breaking the linear operation mode of a single mining unit, and improving the overall mining efficiency of the ore body.

[0088] Step 240: While mining the lower side of the main ore body area in the middle of the outer stope of the first mining unit, simultaneously mine the upper side of the main ore body area in the middle of the outer stope of the second mining unit, as well as the upper triangular area of ​​all stopes in the second mining unit.

[0089] In the embodiments disclosed herein, spatially overlapping synchronous mining of different mining units can be achieved. The timing layout and construction logic of this operation can be referred to... Figure 9 and Figure 4 , Figure 9As a schematic diagram of the horizontal mining sequence, it clearly shows the horizontal mining zoning and synchronous advancement relationship of the first and second mining units, and clarifies the synchronous mining layout of the main ore body ③ on the footwall of the first mining unit, the first mining area ⑤ on the footwall of the outer stope of the second mining unit, and the remaining ore body ⑥ in the triangular area of ​​the footwall of the second mining unit. The specific implementation process is as follows: based on the mining of the first mining area ① on the side of the footwall of the first mining unit, the remaining ore body ② in the triangular area of ​​the footwall of the first mining unit, and the main ore body ③ on the footwall of the first mining unit, the first mining area ⑤ on the footwall of the outer stope of the second mining unit is simultaneously advanced with the cross-construction of the first mining unit. Then, the mining of the remaining ore body ⑥ in the triangular area of ​​the footwall of the second mining unit is carried out. The main ore body ⑦ in the triangular area of ​​the footwall of the second mining unit is advanced after the mining of the previous area. The remaining ore body in the triangular area of ​​the footwall between the two stopes of the second mining unit is mined synchronously with the ore body ⑧ in the middle of the first mining unit. The corresponding areas of each number form a mining pattern of horizontally staggered advancement and cyclical arrangement, realizing the spatial cross-construction of adjacent mining units. Figure 4 This flowchart illustrates the process of mining the footwall side of the outer stope of the first mining unit, showcasing the specific technology of medium-deep hole blasting mining and clarifying the overlapping construction logic between this step and the corresponding area of ​​the second mining unit. In practice, the pre-reserved access shafts in the outer stope of the first mining unit serve as the blasting free face. Downward fan-shaped medium-deep holes are arranged in the drilling roadways, and horizontal parallel shallow holes are arranged on both sides of the ore extraction roadways and drilling roadways to the economically reasonable boundary. Simultaneously, while carrying out medium-deep hole blasting mining on the footwall side of the central main ore body area, medium-deep hole blasting mining is carried out concurrently on the upper side of the central main ore body area in the outer stope of the second mining unit. Following the mining process on the upper side of the first mining unit, cutting shafts are first constructed to form cutting grooves as compensation space. Then, corresponding blast holes were constructed in the rock drilling roadways and ore extraction roadways to blast and break up the ore. At the same time, the large-path fine mining method was carried out simultaneously in the hanging wall triangle area of ​​all mining areas in the second mining unit. First, the main part of the triangle area was blasted and the foundation ore was cleared. Then, the remaining ore body was divided into layers and access routes. The mining was carried out zone by zone using a combination of roadway excavation and shallow hole blasting. The synchronous mining operations of the two mining units were completed by relying on the established collaborative engineering layout to complete the supporting procedures such as ore extraction and support, realizing spatial cross-coordinated construction between mining areas.

[0090] This technical step, by simultaneously mining the hanging wall of the second mining unit and the hanging wall triangle of all mining units while mining the lower side of the outer stope of the first mining unit, can break the traditional linear mining mode of a single mining unit and a single ore body area. It can achieve coordinated advancement of mining processes in multiple mining units and multiple ore body areas, and significantly improve the overall mining efficiency and production capacity of the ore body.

[0091] Step 250: When mining the central main ore body area in the central stope of the first mining unit, simultaneously carry out fine mining and backfilling of the footwall triangular area between the rock drilling roadways on both sides of the second mining unit using the same large-path method.

[0092] In this embodiment of the present disclosure, cross-unit synchronous mining and backfilling of different ore body areas in the first and second mining units can be achieved. The process layout and timing logic of this operation can be referred to Figure 5 and Figure 8 , Figure 5 The process flow diagram for the mining of the central stope of the first mining unit clearly shows the mining process of the central stope X2 of the first mining unit and its synchronous operation relationship with the remaining ore body in the footwall triangular area between the two stopes on both sides of the second mining unit. Figure 8 This flowchart illustrates the process of fine mining in the footwall triangle area, showcasing the specific implementation of the modular mining method using the large approach, and serves as the technological basis for the footwall triangle area mining in the second mining unit. In practice, after the outer and inner stopes of the first mining unit are fully mined and filled, new drilling and ore extraction roadways are constructed in the central stope of the first mining unit. During drilling, pre-roof control is carried out simultaneously. At the end of the ore extraction roadway, a cutting riser is constructed and blasted to form a cutting groove connecting with the drilling roadway. Subsequently, fan-shaped deep holes and horizontal parallel shallow holes are arranged in the drilling roadway, and horizontal parallel shallow holes are arranged in the ore extraction roadway. The central main ore body area is then mined back towards the stage transport roadway. Simultaneously, fine mining is carried out in the footwall triangle area between the drilling roadways on both sides of the second mining unit using the same large approach method as the footwall triangle area of ​​the first mining unit. The mining process begins with... The thickness of the ore body divides the footwall triangular area into an inner thicker ore body module and an outer thinner ore body module. For the inner thicker ore body module, the connecting roadway of the stope is constructed first to the lowest point of the ore body occurrence. Then, the drilling roadway is driven from the opposite direction along the boundary of the backfill body and the roof is pre-controlled simultaneously. The downward parallel blasting mining is carried out using the connecting roadway as the working space. For the outer thinner ore body module, multiple roads are arranged according to the drilling roadway and driven from opposite directions as free faces, and the roof is pre-controlled simultaneously. After the ore body of each module in the footwall triangular area of ​​the second mining unit is mined, the backfilling operation is carried out in a timely manner. The synchronous operation of the two mining units is based on the constructed collaborative engineering layout to complete the supporting procedures such as ore extraction and support, realizing cross-unit spatial cross-collaborative construction.

[0093] This technical step involves simultaneously conducting fine mining and backfilling of the lower triangle area of ​​the second mining unit using the large-path method while mining the main ore body area in the central part of the first mining unit. This breaks the process advancement mode within a single mining unit and enables coordinated advancement of mining processes across mining units and different types of ore body areas, thereby significantly improving the overall mining efficiency and production capacity of the ore body.

[0094] Step 260: The inner stope of the second mining unit is redefined as the outer stope of the third mining unit. When mining the lower side of the main ore body area in the middle of the outer stope of the previous mining unit and the middle main ore body area in the middle stope of the previous mining unit, cross mining operations are carried out simultaneously in the corresponding area of ​​the next mining unit. The continuous cross mining of the ore body from one wing to the other is achieved by relying on the layout of the already constructed collaborative engineering.

[0095] In this context, "previous mining unit" refers to the designated mining unit that initiates mining operations during the ore body's cyclic mining process. It serves as the operational reference for subsequent mining units. In this embodiment, the first and second mining units both act as the preceding mining unit at their respective stages; that is, the first mining unit precedes the second mining unit, and the second mining unit precedes the third mining unit. "Subsequent mining unit" refers to the mining unit immediately adjacent to the preceding mining unit and constructed in the ore body's mining direction. It is constructed based on the stope structure parameters of the preceding mining unit and spatially overlaps with it. In this embodiment, the second and third mining units both act as the subsequent mining units at their respective stages; that is, the second mining unit follows the first mining unit, and the third mining unit follows the second mining unit. "Cross-mining operation" refers to the coordination between two adjacent mining units. The core of the mining operation is that while the previous mining unit is mining a specific area of ​​ore body, the next mining unit is simultaneously mining the corresponding area of ​​ore body. Specifically, when the previous mining unit is mining the footwall side of the main ore body area in the middle of the outer mining area, the next mining unit is simultaneously mining the hanging wall side of the main ore body area in the middle of its outer mining area and the hanging wall triangle area of ​​all mining areas; when the previous mining unit is mining the main ore body area in the middle mining area, the next mining unit is simultaneously mining the footwall triangle area between the drilling roadways on both sides of its mining areas, realizing spatial synchronous construction across units; the third mining unit is formed by directly re-delineating the inner mining area of ​​the second mining unit as its outer mining area based on the mining area structure parameters of the second mining unit as a unified standard. It is the subsequent mining unit after the second mining unit in the process of cyclic advancement of the ore body from one wing to the other, forming a spatial overlap and connection with the second mining unit, and using the same cross mining operation to carry out mining operations.

[0096] For the embodiments disclosed herein, continuous cross-mining of the ore body from one wing to the other can be achieved. The propulsion mechanism and operational logic can be referred to [reference needed]. Figure 10 and Figure 9 , Figure 10 As a schematic diagram of the cyclical advancement, it clearly demonstrates the connection mode of the mining units and the principle of engineering reuse, and intuitively presents the method of redefining the inner stope of the previous mining unit to the outer stope of the next mining unit. Figure 9As a schematic diagram of the horizontal mining sequence, it illustrates the cyclical layout and cross-mining advance relationship of the mining areas in the horizontal direction, providing a layout basis for the implementation of continuous cross-mining procedures. In specific implementation, after the second mining unit completes the mining and filling of the outer and middle mining areas and advances to the inner mining area, the inner mining area of ​​the second mining unit can be directly redefined as the outer mining area of ​​the third mining unit. The third mining unit is then assembled according to the previous assembly and operation standards of the first and second mining units. Subsequently, the cross-mining steps between the first and second mining units are repeated. That is, while mining the remaining ore body area of ​​the second mining unit, the hanging wall side of the main ore body area in the middle of the outer mining area and the hanging wall triangle of all mining areas are simultaneously carried out in the third mining unit. In the subsequent mining of the second mining unit, while mining the ore body in the middle of the mining area, fine mining and backfilling will be carried out simultaneously in the footwall triangle area between the drilling roadways on both sides of the third mining unit. Throughout the process, the core roadway project will not be reconstructed. The entire process will rely on the coordinated engineering layout of drilling roadways, ore extraction roadways, connecting roadways and other projects constructed for each mining unit in the early stage to complete the supporting processes such as ore extraction, support and backfilling between each mining unit. In this way, the subsequent mining units will be continuously built and cross-mining operations will be carried out, and finally the continuous cross-mining of the ore body from one wing to the other will be achieved.

[0097] This technical step, by redefining the inner stope of the second mining unit as the outer stope of the third mining unit, enables seamless connection between adjacent mining units, breaks the mining boundary limitations of a single mining unit, and forms a continuous mining operation system from one wing to the other by relying on repeated cross mining steps, which can significantly improve the overall mining efficiency and production continuity of the ore body.

[0098] Step 270: After completing the mining of each area within the first mining unit, subsequent backfilling shall be carried out within the specified time. A guideway shall be reserved as a free face for subsequent mining. The drilling roadways, ore extraction roadways and connecting roadways formed during construction shall be reused as working space and ore extraction channels for subsequent mining, thus completing the cyclic mining of the ore body from one wing to the other.

[0099] In this embodiment of the present disclosure, after all mining operations in the central main ore body area, hanging wall and footwall triangular areas, etc., are completed in the first mining unit, subsequent backfilling operations are carried out uniformly in each post-mining void according to the predetermined time requirements. At the same time, access shafts are reserved at key locations such as cutting slots to provide necessary free faces for blasting mining of subsequent adjacent mining units. On this basis, without reconstructing new roadway engineering, the drilling roadways, ore extraction roadways, and connecting roadways constructed in the early stage for the mining of the first mining unit are directly used as drilling operation spaces, ore transportation channels, and linkage channels for all subsequent mining units. Relying on these reused roadway engineering projects, starting from the starting wing of the ore body mining, the second and third subsequent mining units are constructed according to standards. All operation steps such as zonal mining, synchronous cross construction, and subsequent backfilling of the first mining unit are repeated. Finally, relying on standardized technology and reusable collaborative engineering layout, continuous cyclic mining of the entire ore body from one wing to the other can be achieved.

[0100] In this technical process, a complete ore body circulation and advancement mining system is constructed through the coordinated operation of subsequent backfilling, reserved wells, and roadway reuse. This system enables continuous mining of the ore body from one wing to the other, significantly improving the overall mining efficiency and resource recovery rate of the ore body while ensuring mining safety and controlling ore dilution losses. It also achieves efficient utilization of engineering resources, realizing the coordinated optimization of mining safety, efficiency, resource recovery, and construction costs from the perspective of the entire operation process.

[0101] This application addresses the mining needs of gently dipping, thick ore bodies by employing a core strategy of zoned planning, coordinated mining, and cyclical advancement to conduct efficient backfilling mining. The overall implementation process can be achieved through... Figure 11 , Figure 9 The entire layout is presented in a comprehensive manner, with each icon number echoing the others and breaking down the mining layout and advancement logic layer by layer. In particular, the mining site engineering layout can rely on the supporting arrangement of backfill, pre-controlled top anchor bolts, rock drilling roadways, downward parallel medium-deep holes, downward fan-shaped medium-deep holes A9, upward fan-shaped medium-deep holes A10, horizontal parallel shallow holes A11, connecting roadways, external transport roadways, cutting risers A4, cutting slots A5, ore extraction roadways, ore bodies, and adjacent risers to construct a coordinated engineering layout integrating rock drilling, ore extraction, blasting, backfilling, and support, laying the foundation for the entire mining process. Figure 11 As a schematic diagram of the vertical mining sequence, it clarifies the mining sequence and regional division principles in the vertical direction of the ore body. First, large-scale mining is carried out in the first mining area ① of the medium-deep hole on the upper side of the first mining unit. Then, fine mining is carried out in the remaining ore body ② of the upper triangular area of ​​the first mining unit using the large-path method. Next, the main ore body ③ of the lower foot of the first mining unit is mined. Finally, modular fine mining is carried out in the remaining ore body ④ of the lower triangular area of ​​the first mining unit, so as to achieve orderly progress from the easy-to-mine core area to the difficult-to-mine residual area. Figure 9As a schematic diagram of the horizontal mining sequence, it illustrates the horizontal mining advancement and cyclical layout of the ore body. While completing the mining of the first mining unit's upper side medium-deep hole initial mining area ①, the remaining ore body ② in the upper triangular area of ​​the first mining unit, and the main ore body ③ in the lower side of the first mining unit, simultaneous cross-construction is carried out on the first mining area ⑤ in the upper side of the second mining unit's outer stope and the remaining ore body ⑥ in the upper triangular area of ​​the second mining unit. When the first mining unit advances to the mining stage of the middle ore body ⑧, the main ore body ⑦ in the lower triangular area of ​​the second mining unit and the remaining ore body in the lower triangular area between the two stopes of the second mining unit are simultaneously mined. Adjacent mining units are arranged in an overlapping manner, with mining units and mining processes sequentially constructed from one wing of the ore body to the other, relying on... Figure 11 The standardized collaborative engineering layout enables cyclical mining without repetitive engineering construction, ultimately achieving efficient, low-loss, and safe mining of the entire gently dipping, thick ore body.

[0102] In summary, the backfilling mining method for gently dipping thick ore bodies provided in this application can divide the mining area into units perpendicular to the ore body strike and form mining units, constructing a coordinated engineering layout of drilling roadways, ore extraction roadways, and connecting roadways. The ore body is divided into a central main ore body area and upper and lower hanging triangular areas, with the mining unit as the smallest working unit. The method adopts a zoned coordinated mining process of large-scale mining of the central main ore body by medium-deep hole blasting and fine mining of the upper and lower hanging triangular areas by large-path method. At the same time, subsequent mining units are formed based on unified mining area structural parameters to achieve spatial cross-construction between multiple mining areas. After mining, backfilling is carried out in a timely manner, and the existing roadway engineering is reused to complete the cyclic mining of the ore body from one wing to the other. This scheme leverages the scale advantage of deep-hole blasting to maintain high mining efficiency in the central thick ore body, while also adapting to the gradually varying thickness of the ore body in the hanging wall and footwall triangular areas through the fine mining of the large-path method. This effectively avoids ore loss and dilution, as well as ore body residue. Furthermore, the optimized preparatory engineering layout significantly reduces the amount of preparatory work and simplifies operational cycles. The cross-construction of multiple mining areas and the reuse of roadway engineering further enhance overall mining efficiency. Timely post-mining and roadway roof support effectively manage post-mining void risks and prevent instability of the hanging wall. Ultimately, based on the optimized preparatory engineering layout, it simultaneously achieves efficient, low-loss, and safe mining of the central main area of ​​the gently dipping thick ore body and the residual triangular areas in the hanging wall and footwall, synergistically achieving mining efficiency, resource recovery rate, and mining safety.

[0103] Furthermore, as Figure 1 and Figure 2 The specific implementation of the method shown in this embodiment provides a backfilling mining device for a gently inclined, thick ore body, such as... Figure 12 As shown, the device includes: a division module 121 and a mining module 122;

[0104] The division module 121 can be used to divide the mining area into units vertically to the ore body and determine the mining area structure parameters. Based on the mining area range defined by the mining area structure parameters, multiple adjacent mining area units are taken as the first mining unit starting from one wing of the ore body. Based on the ore body space range of the first mining unit, a coordinated engineering layout of drilling roadways, ore extraction roadways and connecting roadways is constructed.

[0105] The mining module 122 can be used to divide the ore body in the first mining unit into a central main ore body area and upper and lower triangular areas, with the first mining unit as the smallest working unit. The zoning and coordinated mining process is used to carry out zoning and coordinated mining of the central main ore body area and the upper and lower triangular areas. The zoning and coordinated mining process includes: large-scale mining of the central main ore body area by medium-deep hole blasting, and fine mining of the upper and lower triangular areas by large-path method.

[0106] The mining module 122 can also be used to build subsequent mining units based on the first mining unit and with the same mining structure parameters. While completing the mining of part of the first mining unit, the zoned collaborative mining process is replicated to the corresponding area of ​​the next mining unit to carry out mining operations. The spatial cross-construction between mining areas is realized by relying on the collaborative engineering layout.

[0107] The mining module 122 can also be used to carry out subsequent backfilling within a specified time after the mining of each area in the first mining unit is completed, reserve the access well as the free face for subsequent mining, and reuse the drilling roadway, ore extraction roadway and connecting roadway formed by construction as the working space and ore extraction channel for subsequent mining, so as to complete the cyclic mining of the ore body from one wing to the other.

[0108] In some embodiments of this application, when constructing a collaborative engineering layout of drilling roadways, ore extraction roadways, and connecting roadways based on the ore body space of the first mining unit, module 121 is specifically used to construct connecting roadways from the stage transport roadway to the boundary between the ore body and the hanging wall rock at the middle position of the upper and lower parts of the mining area within the ore body space of the mining area on both sides of the first mining unit, forming a layout where the upper drilling roadway and the lower ore extraction roadway correspond one-to-one, and the excavation boundaries of the drilling roadway and the ore extraction roadway do not exceed the ore body space of the first mining unit; starting from the ore-rock boundary at the end of the lower ore extraction roadway on both sides of the mining area of ​​the first mining unit, connecting roadways are excavated in opposite directions within the ore body space of the first mining unit along the ore body strike, and the connecting roadways form a collaborative engineering layout with the drilling roadway and the ore extraction roadway.

[0109] In some embodiments of this application, when the first mining unit is taken as the smallest working unit and the mining ore body within the first mining unit is divided into the central main ore body area and the hanging wall and footwall triangular areas, the mining module 122 can be specifically used to delineate the core ore body area with uniform thickness and no gradual thinning in the three-dimensional space of the mining area within the first mining unit as the central main ore body area; and to delineate the triangular residual ore body area in the three-dimensional space of the mining area within the first mining unit, which extends from the central main ore body area to the hanging wall and footwall and has a gradually thinning shape, as the hanging wall triangular area and the footwall triangular area, wherein the hanging wall triangular area is the triangular ore body area of ​​the central main ore body area that gradually thins towards the hanging wall and footwall, and the footwall triangular area is the triangular ore body area of ​​the central main ore body area that gradually thins towards the footwall and footwall.

[0110] In some embodiments of this application, when using medium-deep hole blasting for large-scale mining of the central main ore body area, the mining module 122 can be specifically used to construct a cutting riser in the middle of the outermost stope of the first mining unit, connecting the drilling roadway and the ore extraction roadway. The cutting riser serves as the initial free surface for blasting to form a cutting groove, which acts as compensation space for the medium-deep hole blasting. From the drilling roadway, downward fan-shaped medium-deep holes and auxiliary horizontal parallel shallow holes are constructed, relying on the compensation space of the cutting groove to carry out blasting, mining the main body of the hanging wall of the central main ore body area and the ore on both sides of the drilling roadway and the ore extraction roadway. The collapsed ore is withdrawn and transported out through the connecting roadway. After the mining of the hanging wall of the central main ore body area is completed, the mining is completed within a preset time period. Subsequent backfilling is carried out, and a guide shaft is reserved at the cutting groove location. Using the guide shaft as the blasting free face, a fan-shaped medium-deep hole is arranged in the rock drilling roadway, and horizontal parallel shallow holes are arranged on both sides of the ore extraction roadway and the rock drilling roadway to the preset boundary before blasting. The main part of the footwall of the central main ore body area is mined, and the ore is transported out through the bottom ore extraction roadway. After the footwall of the central main ore body area is mined, subsequent backfilling is completed within a preset time period. After the mining and backfilling of the two mining areas on both sides of the first mining unit are completed, the rock drilling roadway, ore extraction roadway and cutting groove are constructed in the central mining area. The medium-deep hole blasting process is used to mine the central main ore body area towards the stage transport roadway. After the mining is completed, subsequent backfilling is completed within a preset time period.

[0111] In some embodiments of this application, when using the large-path method for fine mining of the hanging wall and footwall triangular areas, the mining module 122 can be used to simultaneously mine the hanging wall side of the main ore body area in the middle, and simultaneously construct fan-shaped deep holes and horizontal parallel shallow holes from the ore extraction roadway to blast and mine the main part of the hanging wall triangular area and clear the bottom ore on both sides of the ore extraction roadway. The collapsed ore is then transported out through the connecting roadway. The remaining ore body in the hanging wall triangular area is divided into multiple layers vertically. Starting from the connecting roadway, several paths are divided along the ore extraction roadway towards the outside of the ore body. Based on the division results of the layers and paths, each layer and each path is mined area by area using a combination of roadway excavation and shallow hole blasting. The footwall triangular area is divided into an inner thicker ore body module and an outer thicker ore body module, with the ore body thickness being less than or equal to the height of a single path. For the thinner ore body module on the side, and the thicker ore body module on the inside, the construction of the connecting roadway from the stage transport roadway to the lowest point of the ore body occurrence of the thicker ore body module on the inside is carried out first. Then, the drilling roadway is driven in opposite directions along the boundary of the backfill body to form a through roadway. During the driving process, the roof is pre-controlled simultaneously. The through roadway is used as the working space to construct downward parallel blast holes and carry out blasting mining. For the thinner ore body module on the outside, multiple roads are arranged based on the drilling roadway. Each roadway is a free face to carry out opposite driving mining. During the driving process, the roof is pre-controlled simultaneously. After the mining of each roadway in the hanging wall triangle area and each module ore body in the hanging wall triangle area is completed, the subsequent backfilling is completed within a preset time period. The collapsed ore is removed through the connecting roadway, the connecting roadway in the stope, or the drilling roadway. The connecting roadway is backfilled after the mining of the ore bodies in the triangle areas on both sides is completed.

[0112] In some embodiments of this application, when the remaining ore body in the hanging wall triangle is vertically divided into multiple layers, and several access roads are divided outward from the connecting roadway along the ore body, based on the layered and access roadway division results, each layer and each access roadway is mined area by area using a roadway excavation combined with shallow hole blasting. Specifically, the mining module 122 can be used to divide several access roads horizontally and vertically into several layers of access roads in the remaining ore body in the hanging wall triangle, starting from the connecting roadway and extending outward from the ore body along the ore body, forming a layered and striped access roadway division result. Each layer of access roads intersects with each access roadway to form a three-dimensional mining unit. The mining range is the entire remaining ore body in the hanging wall triangle between the ore body access roads on both sides of the first mining unit. For single-layer access roads with single horizontal lines and single vertical layers, bidirectional side-to-side roadway excavation mining is carried out on the single-layer access roadway using the ore body access roads on both sides, combined with shallow hole blasting caving mining. The collapsed ore is uniformly withdrawn and transported out through the connecting roadway and the ore extraction roadway inside the first mining unit. For multi-level access roads with multiple vertical layers and several horizontal layers, the lower access road is first mined using a combination of roadway excavation and shallow-hole blasting to create free space. The collapsed ore is then gathered into a slag heap and steep slope to serve as the working channel for the upper access road. After slag padding and roof lifting, the upper access road is mined using a combination of roadway excavation and shallow-hole blasting with simultaneous pre-controlled roof support. Then, the lower access road is constructed using the space of the upper access road. The remaining ore body in the lower access road is mined by blasting through parallel shallow holes. The collapsed ore is then removed through the connecting roadway and the ore extraction roadway inside the first mining unit. For the layered and segmented access roadway on the right side of the connecting roadway, the roadway excavation combined with shallow hole blasting is used for mining in an alternating order, and backfilling is carried out in a timely manner. For the ore body in the small triangular area on the left side of the connecting roadway, lateral horizontal parallel shallow hole blasting is arranged in the connecting roadway for mining. The collapsed ore is directly removed through the connecting roadway.

[0113] In some embodiments of this application, when subsequent mining units are constructed based on the first mining unit and using the same stope structure parameters, and while completing the mining of a portion of the first mining unit, the zoned collaborative mining process is replicated to the corresponding area of ​​the subsequent mining unit for mining operations, and spatial cross-construction between mining areas is achieved by relying on the collaborative engineering layout, the mining module 122 can specifically be used to select two adjacent mining areas within the first mining unit and the inner mining area of ​​the first mining unit, and construct a second mining unit according to the stope structure parameters; when mining the lower side of the central main ore body area of ​​the outer mining area of ​​the first mining unit, the central main ore body area of ​​its outer mining area is simultaneously mined in the second mining unit. On the upper side, and the upper triangular area of ​​all the mining areas in the second mining unit; when mining the central main ore body area of ​​the central mining area of ​​the first mining unit, the same large-path method is used to carry out fine mining and backfilling of the lower triangular area between the drilling roadways of the mining areas on both sides of the second mining unit; the inner mining area of ​​the second mining unit is redefined as the outer mining area of ​​the third mining unit, and the cross mining operation is carried out simultaneously in the corresponding area of ​​the next mining unit when mining the lower side of the central main ore body area of ​​the outer mining area of ​​the previous mining unit and the central main ore body area of ​​the central mining area of ​​the previous mining unit, relying on the layout of the already constructed collaborative engineering to achieve continuous cross mining of the ore body from one wing to the other.

[0114] It should be noted that other corresponding descriptions of the functional units involved in the filling mining device for a gently dipping thick ore body provided in this embodiment can be found in [reference needed]. Figure 1 and Figure 2 The corresponding descriptions in [the document] will not be repeated here.

[0115] Based on the above, Figure 1 and Figure 2 Accordingly, this embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements the above-described method. Figure 1 and Figure 2 The filling mining method shown is for a gently dipping, thick ore body.

[0116] Based on this understanding, the technical solution of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as CD-ROM, USB flash drive, mobile hard drive, etc.) and includes several instructions to cause an electronic device (such as personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of this application.

[0117] Based on the above, Figure 1 and Figure 2 The method shown, and Figure 12To achieve the above objectives, the present application also provides an electronic device, specifically a personal computer, tablet computer, server, or other network device, as shown in the virtual device embodiment. This device includes a storage medium and a processor; the storage medium stores a computer program; the processor executes the computer program to achieve the above-described objectives. Figure 1 and Figure 2 The filling mining method shown is for a gently dipping, thick ore body.

[0118] Optionally, the aforementioned physical devices may also include a user interface, a network interface, a camera, radio frequency (RF) circuitry, sensors, audio circuitry, a Wi-Fi module, etc. The user interface may include a display screen, input units such as a keyboard, etc., and optional user interfaces may also include USB interfaces, card reader interfaces, etc. The network interface may optionally include standard wired interfaces, wireless interfaces (such as Wi-Fi interfaces), etc.

[0119] Those skilled in the art will understand that the physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or combine certain components, or have different component arrangements.

[0120] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the aforementioned physical device, supporting the operation of information processing programs and other software and / or programs. The network communication module is used to enable communication between the various components within the storage medium, as well as communication with other hardware and software in the information processing physical device.

[0121] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platform, or it can be implemented by hardware.

[0122] This invention can divide the mining area into units vertically to the ore body strike and form mining units, constructing a collaborative engineering layout of drilling roadways, ore extraction roadways, and connecting roadways. The mining unit is the smallest working unit, dividing the ore body into the central main ore body area and the upper and lower hanging triangular areas. It adopts a zoned collaborative mining process of large-scale mining of the central main ore body by medium-deep hole blasting and fine mining of the upper and lower hanging triangular areas by the large-path method. At the same time, it relies on unified mining area structure parameters to form subsequent mining units, realizing spatial cross-construction between multiple mining areas. After mining, it promptly backfills, reserves access shafts, and reuses existing roadway engineering to complete the cyclic mining of the ore body from one wing to the other. This scheme leverages the scale advantage of deep-hole blasting to maintain high mining efficiency in the central thick ore body, while also adapting to the gradually varying thickness of the ore body in the hanging wall and footwall triangular areas through the fine mining of the large-path method. This effectively avoids ore loss and dilution, as well as ore body residue. Furthermore, the optimized preparatory engineering layout significantly reduces the amount of preparatory work and simplifies operational cycles. The cross-construction of multiple mining areas and the reuse of roadway engineering further enhance overall mining efficiency. Timely post-mining and roadway roof support effectively manage post-mining void risks and prevent instability of the hanging wall. Ultimately, based on the optimized preparatory engineering layout, it simultaneously achieves efficient, low-loss, and safe mining of the central main area of ​​the gently dipping thick ore body and the residual triangular areas in the hanging wall and footwall, synergistically achieving mining efficiency, resource recovery rate, and mining safety.

[0123] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this application. Those skilled in the art will understand that the modules in the apparatus of the embodiment can be distributed within the apparatus of the embodiment as described, or can be modified to be located in one or more apparatuses different from this embodiment. The modules of the above-described embodiment can be combined into one module, or further divided into multiple sub-modules.

[0124] The serial numbers in this application are for descriptive purposes only and do not represent the superiority or inferiority of any particular implementation scenario. The above disclosures are merely a few specific implementation scenarios of this application; however, this application is not limited thereto, and any variations conceived by those skilled in the art should fall within the protection scope of this application.

Claims

1. A backfilling mining method for gently dipping, thick ore bodies, characterized in that, include: The mining area is divided into units perpendicular to the ore body and the mining area structure parameters are determined. Based on the mining area range defined by the mining area structure parameters, multiple adjacent mining areas are taken as the first mining unit starting from one wing of the ore body. Based on the ore body space range of the first mining unit, a coordinated engineering layout of drilling roadways, ore extraction roadways and connecting roadways is constructed. Taking the first mining unit as the smallest working unit, the ore body in the mining area within the first mining unit is divided into a central main ore body area and upper and lower triangular areas. A zoned coordinated mining process is adopted to carry out zoned coordinated mining of the central main ore body area and the upper and lower triangular areas. The zoned coordinated mining process includes: large-scale mining of the central main ore body area using medium-deep hole blasting, and fine mining of the upper and lower triangular areas using the large-path method. Based on the first mining unit, subsequent mining units are built according to the same mining structure parameters. While completing the mining of a part of the first mining unit, the partitioned collaborative mining process is replicated to the corresponding area of ​​the next mining unit to carry out mining operations. Spatial cross-construction between mining areas is achieved by relying on the collaborative engineering layout. After the mining of each area within the first mining unit is completed, subsequent backfilling is carried out within a specified time. A free face is reserved for subsequent mining, and the drilling roadways, ore extraction roadways and connecting roadways formed during construction are reused as working spaces and ore extraction channels for subsequent mining, thus completing the cyclic mining of the ore body from one wing to the other.

2. The method according to claim 1, characterized in that, Based on the spatial range of the ore body in the first mining unit, a coordinated engineering layout is constructed to form drilling roadways, ore extraction roadways, and connecting roadways, including: Within the ore body space of the mining areas on both sides of the first mining unit, a connecting roadway is constructed from the stage transport roadway to the junction of the ore body and the hanging wall at the middle position of the upper and lower parts of the mining area, forming a layout in which the upper drilling roadway and the lower ore extraction roadway correspond one-to-one, and the excavation boundaries of the drilling roadway and the ore extraction roadway do not exceed the ore body space of the first mining unit. Starting from the ore-rock interface at the end of the ore extraction roadway at the bottom of the mining area on both sides of the first mining unit, a connecting roadway is excavated in opposite directions within the ore body space of the first mining unit along the ore body strike. The connecting roadway, the rock drilling roadway, and the ore extraction roadway form a coordinated engineering layout.

3. The method according to claim 1, characterized in that, Taking the first mining unit as the smallest working unit, the ore body within the first mining unit is divided into a central main ore body area and upper and lower hanging triangular areas, including: The core ore body area with uniform thickness and no gradual thinning in the three-dimensional space of the first mining unit is designated as the central main ore body area. Within the three-dimensional space of the first mining unit, the triangular residual ore body area extending from the central main ore body area to the hanging wall and footwall, exhibiting a gradually thinning shape, is defined as the hanging wall triangle area and the footwall triangle area. The hanging wall triangle area is the triangular ore body area of ​​the central main ore body area that gradually thins towards the hanging wall, and the footwall triangle area is the triangular ore body area of ​​the central main ore body area that gradually thins towards the footwall.

4. The method according to claim 3, characterized in that, The large-scale mining of the central main ore body area using medium-deep hole blasting includes: A cutting riser is constructed in the middle of the outermost stope of the first mining unit to connect the rock drilling roadway and the ore extraction roadway. The cutting riser is used as the initial free surface to carry out blasting to form a cutting groove, which serves as the compensation space for medium-deep hole blasting. From the drilling tunnel, blasting is carried out using the compensation space of the cutting groove to extract the main body of the hanging wall of the central main ore body area, as well as the ore on both sides of the drilling tunnel and the ore extraction tunnel. The caving ore is then extracted and transported out through the connecting tunnel. After the mining of the hanging wall of the central main ore body area is completed, subsequent backfilling is completed within a preset time period, and a guide shaft is reserved at the location of the cutting groove. Using the aforementioned free face of the shaft as the blasting face, deep fan-shaped holes are arranged in the rock drilling roadway, and horizontal parallel shallow holes are arranged on both sides of the ore extraction roadway to the preset boundary before blasting is carried out. The main body of the lower side of the central main ore body area is mined, and the ore is transported out through the bottom ore extraction roadway. After the mining of the lower side of the central main ore body area is completed, subsequent backfilling is completed within a preset time period. After the mining and backfilling of the two mining areas on both sides of the first mining unit are completed, the drilling roadway, the ore extraction roadway and the cutting groove are constructed in the middle mining area. The main ore body area in the middle is then mined back towards the stage transport roadway using the medium-deep hole blasting process. After mining is completed, subsequent backfilling is completed within a preset time period.

5. The method according to claim 4, characterized in that, The upper and lower triangular areas are subjected to fine mining using the large-path method, including: While mining the upper side of the main ore body in the middle, the main part of the upper triangular area is mined by blasting from the upper fan-shaped deep holes and horizontal parallel shallow holes in the mining roadway, and the bottom ore on both sides of the mining roadway is cleared. The collapsed ore is then mined out through the connecting roadway. The remaining ore body in the upper triangular area is divided into multiple layers in the vertical direction. Starting from the connecting roadway, several access routes are divided along the ore exit roadway towards the outside of the ore body. Based on the division results of the layered access routes, each layer and each access route is mined area by area using a combination of roadway excavation and shallow hole blasting. The footwall triangular area is divided into an inner thicker ore body module and an outer thinner ore body module, with the ore body thickness being less than or equal to the height of a single access road. For the inner thicker ore body module, the construction of the connecting roadway from the stage transport roadway to the lowest point of the ore body occurrence in the inner thicker ore body module is carried out first. Then, the drilling roadway is driven in opposite directions along the boundary of the backfill body to form a through access roadway. During the driving process, the roof is pre-controlled simultaneously. The through access roadway is used as the working space to construct downward parallel blast holes and carry out blasting mining. For the outer thinner ore body module, multiple access roads are arranged based on the drilling roadway. Each access roadway is a free face to carry out opposite driving mining. During the driving process, the roof is pre-controlled simultaneously. After the mining of each access road in the upper triangle area and each module of the lower triangle area is completed, subsequent backfilling is completed within a preset time period. The collapsed ore is transported out through the connecting roadway, the stope connecting roadway or the drilling roadway. The connecting roadway is backfilled after the mining of the ore bodies in the triangle areas on both sides is completed.

6. The method according to claim 5, characterized in that, The remaining ore body in the upper triangular area is vertically divided into multiple layers. Starting from the connecting roadway, several access routes are divided outwards from the ore body along the ore extraction roadway. Based on the layered and route-divided division, each layer and each access route is mined zone by zone using a combination of roadway excavation and shallow-hole blasting. This includes: Starting from the connecting roadway, extending outward from the ore body along the ore extraction roadway, several access routes are divided in the horizontal direction of the remaining ore body in the hanging wall triangle area, and several layers of access routes are divided in the vertical direction, forming a layered and striped access route division result. Each layer of access routes intersects with each access route to form a three-dimensional mining unit. The mining range is the entire remaining ore body in the hanging wall triangle area between the ore extraction roadways on both sides of the first mining unit. For single-layer access routes with horizontal single line and vertical single layer, bidirectional side-to-side roadway excavation is carried out on the single-layer access route using the ore extraction roadways on both sides. Combined with shallow hole blasting to break up the ore body, the broken ore is uniformly withdrawn and transported out through the connecting roadway and the ore extraction roadway inside the first mining unit. For multi-level access routes with multiple vertical and horizontal sections, the lower access route is first mined by roadway excavation combined with shallow hole blasting to create free space. The collapsed ore is then gathered into a slag heap and steep slope to serve as the working channel for the upper access route. After the slag is piled up and the roof is lifted, the upper access route is mined by roadway excavation combined with shallow hole blasting and the roof is pre-controlled and supported simultaneously. Then, relying on the space of the upper access route, downward parallel shallow holes are constructed to blast and mine the remaining ore body of the lower access route. The collapsed ore is then removed and transported out through the connecting roadway and the ore extraction roadway inside the first mining unit. For the layered and segmented access roadway on the right side of the connecting roadway, the roadway excavation combined with shallow hole blasting is used for mining in an alternating order, and backfilling is carried out in a timely manner; for the small triangular ore body on the left side of the connecting roadway, lateral horizontal parallel shallow hole blasting is arranged in the connecting roadway for mining, and the collapsed ore is directly transported out through the connecting roadway.

7. The method according to claim 1, characterized in that, Based on the first mining unit, subsequent mining units are constructed using the same stope structure parameters. While completing mining in a portion of the first mining unit, the zonal coordinated mining process is replicated to the corresponding area of ​​the subsequent mining unit for mining operations. Spatial cross-construction between mining areas is achieved through the coordinated engineering layout, including: Select two adjacent mining areas inside the first mining unit and the inner mining area of ​​the first mining unit, and construct a second mining unit according to the mining area structure parameters. While mining the lower side of the main ore body area in the middle of the outer stope of the first mining unit, simultaneously mining the upper side of the main ore body area in the middle of the outer stope of the second mining unit, as well as the upper triangular area of ​​all the stopes of the second mining unit. When mining the central main ore body area of ​​the central stope of the first mining unit, the same large-path method is used simultaneously for fine mining and backfilling of the footwall triangle area between the rock drilling roadways on both sides of the second mining unit. The inner stope of the second mining unit is redefined as the outer stope of the third mining unit. When mining the main ore body area in the middle of the outer stope of the previous mining unit and the main ore body area in the middle stope of the previous mining unit, cross mining operations are carried out simultaneously in the corresponding area of ​​the next mining unit. The continuous cross mining of the ore body from one wing to the other is achieved by relying on the layout of the already constructed collaborative engineering.

8. A backfilling mining device for a gently dipping, thick ore body, characterized in that, include: The division module is used to divide the mining area into units vertically to the ore body and determine the mining area structure parameters. Based on the mining area range defined by the mining area structure parameters, multiple adjacent mining area units are taken as the first mining unit starting from one wing of the ore body. Based on the ore body space range of the first mining unit, a coordinated engineering layout of drilling roadways, ore extraction roadways and connecting roadways is constructed. The mining module is used to divide the ore body in the first mining unit into a central main ore body area and upper and lower triangular areas, with the first mining unit as the smallest working unit. The module employs a zoned coordinated mining process to carry out zoned coordinated mining of the central main ore body area and the upper and lower triangular areas. The zoned coordinated mining process includes: large-scale mining of the central main ore body area using medium-deep hole blasting, and fine mining of the upper and lower triangular areas using the large-path method. The mining module is also used to build subsequent mining units based on the first mining unit and according to the same mining structure parameters. While completing the mining of a part of the first mining unit, the partitioned collaborative mining process is copied to the corresponding area of ​​the next mining unit to carry out mining operations. The spatial cross-construction between mining areas is realized by relying on the collaborative engineering layout. The mining module is also used to carry out subsequent backfilling within a specified time after completing the mining of each area in the first mining unit, to reserve the access well as the free face for subsequent mining, and to reuse the drilling roadway, ore extraction roadway and connecting roadway formed during construction as the working space and ore extraction channel for subsequent mining, so as to complete the cyclic mining of the ore body from one wing to the other.

9. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 7.

10. An electronic device comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method of any one of claims 1 to 7.

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