A gently inclined-inclined thick ore body top horizontal slicing filling mining method

Abstract

The present application relates to a kind of gently inclined-inclined thick ore body on horizontal slice filling mining method, belong to underground mining method field, steps are, in a stage, multiple subsections and multiple panels are arranged, multiple ore rooms are arranged in panel, and multiple ore layers are arranged in each ore room;Along the trend direction of ore body in this stage, stage transport roadway is opened, subsection stage connecting roadway is opened, subsection transport roadway is opened, and slope is excavated from subsection stage connecting roadway upward;Stage transport roadway and chute connecting roadway are connected by chute;By the way of layering stoping from bottom to top, drift connecting roadway, layering transport roadway, cutting roadway, ore room return air roadway, ventilation connecting roadway and pedestrian ventilation filling raise are excavated, to the stage return air connecting roadway of upper stage;Until the entire ore room is stoped and filled.This application solves the technical problems of large amount of preparation work, difficult to balance mining safety and economy, high mining cost and other technical problems of traditional mining method.

Description

Technical Field

[0001] The present invention relates to the field of underground mining methods, in particular to an upward horizontal layered filling mining method for a gently inclined-inclined thick ore body. Background Art

[0002] The inclination of the ore body is closely related to the transportation method used in the stope. Horizontal and slightly inclined deposits can be directly accessed by various tracked or trackless transportation equipment. Ore bodies with inclinations between gently inclined and inclined are difficult to transport by ore weight. Furthermore, using medium- to deep-hole ore dropping methods can result in ore residue due to the insufficient footwall inclination. Therefore, the backfill method becomes the predominant mining method in underground mining. Therefore, these ore bodies are typically mined using upward horizontal layered backfill.

[0003] Traditional upward horizontal layered filling mining of such ore bodies solves the problems of transportation and loss and dilution control of such ore bodies, but the mining workload of the footwall increases due to the influence of the inclination. When the ore body thickness is small, the length of the ore block can be increased, and the increase in the mining workload of the footwall is not obvious. However, as the ore body thickness increases, in order to control the exposed area of ​​the roof and the stability of the roof, the length of the ore block is greatly reduced, and the mining workload of the footwall increases significantly. In addition, thick and large ore bodies require high mining efficiency, and layered mining restricts mining efficiency, which creates a contradiction between the ore block size and roof safety, production efficiency, and mining workload. Chinese patent CN106894817 discloses a mechanized upward layered wedge-mixed filling mining method, in which the stope is filled with all tailings and waste rock for matching and mixing. Although the waste rock is used to increase the stability of the layering, the labor intensity is high, and each layer must be matched and mixed, and the mining workload is also large.

[0004] Therefore, it is necessary to develop a new type of upward horizontal layered filling mining method that can control the exposed area of ​​the mining site while minimizing the problem of large mining engineering workload as much as possible, so as to meet the economic, efficient and safe mining requirements of such deposits. Summary of the Invention

[0005] Technical problem to be solved: In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention proposes a method for upward horizontal layered filling mining of gently inclined-inclined thick ore bodies, which aims to solve the technical problems of traditional mining methods for such ore bodies, such as large workload for mining approval, difficulty in balancing mining safety and economy, and high mining costs.

[0006] Technical solution:

[0007] The present invention proposes a method for upward horizontal layered filling mining of a gently inclined-inclined thick ore body, the steps of which are as follows:

[0008] S1. Within a stage, multiple sections are arranged along the vertical direction of the ore body, and multiple panels are divided along the strike direction of the ore body. Panel pillars are left at both ends of the panels along the strike direction of the ore body; multiple mine rooms are set along the strike direction of the ore body within the sections of the same panel; multiple ore layers are set in the mine rooms along the vertical direction of the ore body; and a top pillar is set at the top of a stage;

[0009] S2. In this stage, a stage transport tunnel is opened along the strike direction of the ore body. The stage transport tunnel is driven into a stage-by-stage connecting tunnel in the direction of the ore body to the stage transport tunnel. A switchback ramp is driven upward from the stage-by-stage connecting tunnel to connect the stage transport tunnels of each segment. The stage transport tunnel is connected to the chute connecting tunnel driven from the stage transport tunnel of each segment through a chute.

[0010] S3. At the lowest ore layer level of the segment, from the position of the chute in the corresponding panel area of ​​the segment transport roadway, a stope connecting roadway is excavated to enter the layer transport roadway. From the layer transport roadway, a cutting roadway is excavated along the center line of the mine room through the ore body. Continue to excavate to form a mine room return air roadway to a ventilation connecting roadway in the direction of the ore body's upper wall. The ventilation connecting roadway is opened along the strike direction of the ore body. A pedestrian ventilation filling shaft is excavated upward in the middle position of the panel area corresponding to the ventilation connecting roadway to the stage return air connecting roadway of the previous stage. Then, at the ore body boundary position in the direction of the ore body's lower wall in the cutting roadway, a cutting connecting cross roadway is excavated along the strike direction of the ore body to create free space and free surface for mining of this ore layer, and mining of this ore layer is carried out.

[0011] S4. After the mining of the lowest ore layer is completed, the top of the mine connecting tunnel is picked up and the removed roof waste rock is used as the bottom material. It is paved according to the slope of the mine connecting tunnel of the upper ore layer as its bottom plate, filled and formed into a concrete surface layer, forming a mine connecting tunnel leading to the upper ore layer, until the mining is completed and the entire mine room is filled.

[0012] Furthermore, in step S1, the stage height is controlled at 40 to 60 m, the segment height is 10 to 15 m, the length of a single mine chamber is the thickness of the ore body in the horizontal direction, and the width of a single mine chamber is controlled at 20 to 40 m along the strike direction of the ore body; the thickness of the ore layer is 3.5 to 4.5 m, the thickness of the top pillar is 4 to 6 m, the length of the panel area is 200 to 250 m along the strike direction of the ore body, and the width of the panel area pillar is 10 to 15 m.

[0013] Furthermore, in step S1, adjacent mining chambers along the strike direction of the ore body are respectively a one-step mining chamber and a two-step mining chamber, an odd number of mining chambers are arranged in a panel area, and the ore pillars adjacent to the panel area are all arranged as two-step mining chambers; the one-step mining chamber and the two-step mining chamber are arranged at intervals and mined simultaneously, and the mining method of "mining one ore layer every other ore layer" is adopted; in the vertical direction of the ore body, the one-step mining chamber is 1 to 2 ore layers ahead of the two-step mining chamber.

[0014] Furthermore, a panel upper wall connecting road is opened in the panel pillar, and the panel upper wall connecting road is connected with the ventilation connecting roadway.

[0015] Furthermore, in step S2, two chutes are set in one panel area.

[0016] Furthermore, in step S3, during mining, horizontal blastholes are drilled in the cutting tunnel to carry out ore recovery, and the collapsed ore is poured into the chute through the mining field connecting tunnel-segmented transportation tunnel-chute connecting tunnel; the collapsed ore finally falls into the stage transportation tunnel at the bottom layer.

[0017] Furthermore, in step S3, the distance between the segmented transport tunnel and the boundary of the ore body in the direction of the footwall should be determined according to the segmented height and the number of mining layers it is responsible for, to ensure that the slope of the stope connecting tunnel formed in the ore layer it is responsible for is less than 12%.

[0018] Furthermore, point pillars are set after each ore layer is mined. The point pillars are 3m×3m rectangular ore pillars, and the spacing between adjacent point pillars is 8 to 15m.

[0019] Furthermore, in step S4, when the ore body of the mining layer is mined, a filling retaining wall is first built in the mine room return air tunnel and the mining field connecting tunnel to seal them, and then the one-step mining room or the two-step mining room, the mine room return air tunnel, the ventilation connecting tunnel, and the layered transportation tunnel of the mining layer are filled, and a concrete glue layer is formed on the surface of the one-step mining room or the two-step mining room and the layered transportation tunnel of the upper mining layer.

[0020] Furthermore, the one-step mining chamber adopts a one-step mining filling body with a lime-sand mass ratio of 1:6 to 1:10; the two-step mining chamber adopts a two-step mining filling body with a lime-sand mass ratio of 1:20. Beneficial effects

[0021] This application discloses a method for upward horizontal layered filling mining of a gently inclined-inclined thick ore body. In view of the mutual constraints between block size and roof stability, mining accuracy, and mining efficiency in layered mining of thick and large ore bodies, this application divides the panel area along the strike direction of the ore body, and sets up multiple mining chambers in the same panel area along the strike direction of the ore body; multiple ore layers are set up in the mining chamber along the vertical direction of the ore body for layer-by-layer mining; the pillars between ore blocks in the original layered filling method are eliminated, so that multiple panels and more mining chambers in the same panel area can be mined simultaneously, which can maximize the number of mining chambers that are mined simultaneously and ensure efficient mining of such ore bodies;

[0022] Regular point pillars are set up in a single mine room to maximize the width of the mine room, while also maintaining the stability of the large stope roof and the safety of the production process. Layered transport tunnels are added to the footwall and connected to the stope through the layered transport tunnels. Two stope connecting tunnels are arranged in one panel area, solving the problem of large footwall mining workload in the traditional layered filling method.

[0023] In the same section of a panel area, the mining chambers "mine one ore layer every other ore layer", that is, after the ore layer of the first-step mining chamber on the same level is mined and filled, the ore layer of the second-step mining chamber is mined; in the vertical direction, the first-step mining chamber only needs to be 1 to 2 ore layers ahead of the second-step mining chamber, instead of the traditional mining mode of "mining the second-step mining chamber after all the mining of the first-step mining chamber is completed". Not only can the mode of simultaneous operation of the first-step mining chamber and the second-step mining chamber be realized, thereby improving the mining intensity and efficiency of the gently inclined ore body, but since the filling body of the adjacent first-step mining chamber revealed during mining in the second-step mining chamber is only one layer height, compared with the traditional "mining one every other" mining mode, the strength requirement for the first-step mining filling body can be reduced, thereby reducing the filling cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the working principle diagram of the present invention;

[0025] Figure 2 for Figure 1 Sectional view Ⅰ-Ⅰ in the figure;

[0026] Figure 3 for Figure 2 II-II sectional view in FIG;

[0027] Description of reference numerals:

[0028] 1. Stage transport tunnel; 2. Section transport tunnel; 3. Stope connection tunnel; 4. Shaft connection tunnel; 5. Shaft; 6. Cutting connection tunnel; 7. Cutting tunnel; 8. Point pillar; 9. Mine return tunnel; 10. Ventilation connection tunnel; 11. Pedestrian ventilation filling shaft; 12. Stage return air connection tunnel; 13. Filling retaining wall; 14. One-step mining filling body; 15. Two-step mining filling body; 16. Concrete surface layer; 17. Upper wall connection tunnel in the panel area; 18. Panel pillar; 19. Top pillar; 20. One-step mining room; 21. Two-step mining room; 22. Inclined road; 23. Section stage connection tunnel; 24. Layered transport tunnel;

[0029] a. Strike direction of the ore body; b. Dip direction of the ore body; c. Vertical direction of the ore body; d. Hanging wall direction of the ore body; e. Footwall direction of the ore body. DETAILED DESCRIPTION

[0030] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0031] An embodiment of the present invention proposes a method for upward horizontal layered filling mining of a gently inclined or inclined thick ore body. To better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0032] In order to achieve the above object, the present invention provides a method for upward horizontal layered filling mining of a gently inclined thick ore body, the steps of which are as follows:

[0033] S1. In one stage, multiple sections are arranged along the vertical direction c of the ore body, and multiple panels are divided along the strike direction a of the ore body. Panel pillars 18 are left at both ends of the panel along the strike direction a of the ore body, and panel upper wall connecting roads 17 are opened in the panel pillars 18; multiple mining rooms are set along the strike direction a of the ore body in the sections of the same panel; multiple ore layers are set along the vertical direction c of the ore body in the mining rooms, and stratified mining is carried out. Each mining room (section) corresponds to the mining of 2 to 4 ore layers; a top pillar 19 is set at the top of one stage.

[0034] The gently inclined-inclined thick ore body described in the present invention has an inclination angle of 20 to 40 degrees and a thickness of 20 to 40 meters.

[0035] The stage is to excavate one or several main transport tunnels in the same direction b of the ore body at a certain distance in the vertical direction c of the ore body, and divide the ore body into blocks in the vertical direction c of the ore body. This block is the stage, and the main transport tunnel is the stage transport tunnel 1. The vertical distance between the bottom plates of the upper and lower adjacent stage transport tunnels 1 is the stage height.

[0036] The panel area is the mining area distributed horizontally along the strike direction a of the ore body within the stage range.

[0037] Segmentation is within the stage range, and the stage is divided into multiple segments along the vertical direction c of the ore body.

[0038] The mine room is divided into multiple mine rooms within the disk area along the strike direction a of the ore body within the segment range. The length of the mine room refers to the thickness of the ore body along the horizontal direction, and the width of a single mine room is the length along the strike direction a of the ore body.

[0039] The ore seams are multiple layers arranged in the mine along the vertical direction c of the ore body.

[0040] The height of this application stage is controlled at 40-60m, the segment height is 10-15m, and the width of a single mine room is controlled at 20-40m along the strike direction a of the ore body; the ore layer height is 3.5-4.5m, each segment is responsible for mining 2-4 ore layers, the thickness of the top pillar 19 is 4-6m, the length of the panel area along the strike direction a of the ore body is 200-250m, and the width of the panel area pillar 18 is 10-15m.

[0041] Adjacent chambers are a first-stage chamber 20 and a second-stage chamber 21. These chambers are spaced apart and mined using a "mining every other ore layer" mining method. An odd number of chambers are arranged within a panel area, and the ore pillars 18 adjacent to the panel area are all second-stage chambers 21. The ore layer of the first-stage chamber 20 is mined first, followed by the ore layer of the second-stage chamber 21. In the vertical direction c of the ore body, the first-stage chamber 20 is ahead of the second-stage chamber 21 by one or two ore layers. This allows for simultaneous operation of the first-stage and second-stage chambers, improving the mining intensity and efficiency of gently sloping ore bodies. Because the backfill of the adjacent first-stage chamber exposed during mining with the second-stage chamber is only one layer height, the strength requirements for the first-stage backfill can be reduced compared to the traditional "mining every other layer" mining method, thereby reducing backfill costs.

[0042] S2. In the direction e of the footwall of the ore body in this stage, a stage transport tunnel 1 is opened along the strike direction a of the ore body. The stage transport tunnel 1 excavates the segmented stage connecting tunnel 23 toward the ore body to the predetermined position of the segmented transport tunnel 2. The segmented transport tunnel 2 is opened along the strike direction a of the ore body, and a ramp 22 is excavated upward from the segmented stage connecting tunnel 23 to connect the segmented transport tunnels 2 of each segment. The stage transport tunnel 1 is connected to the chute connecting tunnel 4 excavated from the segmented transport tunnel 2 of each segment through the chute 5.

[0043] The ramp 22 is a return ramp, and the bend of the ramp 22 is located on the side of the chute 5 away from the ore body. The return section can provide a buffer for the trackless equipment to avoid long climbing sections. It is set on the side away from the ore body because a mining field connecting tunnel 3 needs to be set on the side of the chute 5 close to the mine, which will affect each other.

[0044] Two chutes 5 are provided within each panel. Based on the optimal path within the panel, the two chutes 5 are preferably located at 1 / 4 and 3 / 4 of the panel length (the distance between adjacent panel pillars 18), respectively. The stope connecting tunnels 3 correspond to the chutes 5, also numbering two. This solves the problem of large-scale bottom wall mining and alignment required by traditional layered-fill methods.

[0045] S3. Use the method of layered mining from bottom to top to mine and fill the mine room. At the level of the lowest ore layer in the segment, from the position of the chute 5 in the panel area corresponding to the segmented transport lane 2, drive the stope connecting lane 3 to enter the layered transport lane 24. From the layered transport lane 24, drive the cutting lane 7 that penetrates the ore body along the center line of the mine room. Continue to drive and form the mine room return air lane 9 to the ventilation connecting lane 10 in the direction d of the upper wall of the ore body. The ventilation connecting lane 10 is opened along the strike direction a of the ore body. A pedestrian ventilation and filling skylight 11 is excavated at an upward angle in the middle position to reach the return air connecting tunnel 12 of the previous stage, thus forming a complete ventilation, pedestrian and filling circuit; then, at the boundary position of the ore body in the direction e of the lower wall of the ore body in the cutting tunnel 7, a cutting connecting cross tunnel 6 is excavated along the strike direction a of the ore body to create free space and free surface for the mining of this ore layer; the ventilation connecting tunnel 10 is connected to the upper wall connecting tunnel 17 of the disk area, serving as the second entrance and exit to the upper wall ventilation connecting tunnel 10.

[0046] The distance between the layered transport tunnel 24 and the boundary of the ore body's footwall is 8 to 15 meters. If the surrounding rock of the footwall is stable, a smaller value can be taken, otherwise a larger value can be taken. The distance between the segmented transport tunnel 2 located in the direction e of the ore body's footwall and the layered transport tunnel 24 of the ore body should be determined according to the segmented height and the number of layers it is responsible for mining, ensuring that the slope of the stope connecting tunnel 3 formed in the layer it is responsible for is less than 12%.

[0047] During mining, a tunneling trolley is used to drill horizontal shallow holes in the cutting tunnel 7 to mine the ore, which is convenient for controlling the ore-rock boundary and avoiding ore depletion. Regular point columns 8 are formed in the ore layer, and the collapsed ore is poured into the chute 5 by a trackless scraper through the mining site connecting tunnel 3-segmented transportation tunnel 2-chute connecting tunnel 4 in sequence; the collapsed ore finally falls into the stage transportation tunnel 1 at the bottom layer.

[0048] Each chamber is equipped with regularly spaced point pillars 8, each measuring 3m x 3m in rectangular shape, based on the permitted exposure area of ​​the ore and chamber dimensions. The spacing between adjacent point pillars 8 is 8 to 15m, ensuring that the maximum exposure area of ​​the chamber is smaller than the permitted exposure area of ​​the ore. The regular arrangement of point pillars 8 within a single chamber maximizes the chamber's width, thereby reducing the number of stope connecting tunnels 3 entering the stope and reducing the amount of footwall mining work. This also maintains the stability of the large stope roof and the safety of the production process.

[0049] S4. After the mining of the ore body of the lowest ore layer is completed, the top of the mining area connecting tunnel 3 is picked and the removed roof waste rock is used as the bottom material. It is paved according to the slope of the mining area connecting tunnel 3 of the upper ore layer as its bottom plate, filled and formed into a concrete surface layer 16, forming a mining area connecting tunnel 3 entering the upper ore layer, until the mining is completed and the entire mine room is filled.

[0050] After the ore body of the current mining layer is mined, the mine room return air laneway 9 and the stope connection laneway 3 are sealed with a backfill retaining wall 13, and the mining layer is then backfilled. The first-step mining room 20 or the second-step mining room 21, the mine room return air laneway 9, the ventilation connection laneway 10, and the layered transport laneway 24 of the mining layer are backfilled, and a concrete surface layer 16 is formed on the surface of the first-step mining room 20 or the second-step mining room 21 and the layered transport laneway 24 of the upper mining layer. The mine room return air laneway 9 and the ventilation connection laneway 10 located in the direction d of the ore body overhead can be filled with corresponding filling materials without forming a concrete surface layer 16.

[0051] When filling, fill according to the filling material of the corresponding mine room and reserve a height of 0.5m. After the filling body reaches the design strength after curing, fill it with a layer of concrete to form a concrete surface layer 16 to reduce ore loss and depletion during the mining process of the upper ore layer.

[0052] During filling, the first-step mining chamber 20 uses the first-step mining filling body 14 with a lime-sand mass ratio of 1:6 to 1:10; the second-step mining chamber 21 uses the second-step mining filling body 15 with a lime-sand mass ratio of 1:20.

[0053] In summary, the upward horizontal layered filling mining method for gently inclined-inclined thick ore bodies proposed in the present invention is suitable for gently inclined-inclined thick ore bodies, improves the mining economy, efficiency and safety, and is suitable for promotion.

[0054] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for upward horizontal layered filling mining of a gently inclined thick ore body, characterized in that: The steps are: S1. In one stage, multiple sections are arranged along the vertical direction (c) of the ore body, multiple panels are divided along the strike direction (a) of the ore body, and panel pillars (18) are left at both ends of the panels along the strike direction (a) of the ore body; multiple mine rooms are set along the strike direction (a) of the ore body in the sections of the same panel; multiple ore layers are set in the mine rooms along the vertical direction (c) of the ore body; and a top pillar (19) is set at the top of one stage; In step S1, adjacent mining rooms along the strike direction (a) of the ore body are respectively a first-step mining room (20) and a second-step mining room (21), an odd number of mining rooms are arranged in one panel area, and the ore pillars (18) adjacent to the panel area are all arranged as second-step mining rooms (21); the first-step mining room (20) and the second-step mining room (21) are arranged at intervals and mined simultaneously, and the mining is carried out in a "mining one ore layer every other ore layer" manner; in the vertical direction (c) of the ore body, the first-step mining room (20) is ahead of the second-step mining room (21) by 1 to 2 ore layers; S2. In this stage, a stage transport tunnel (1) is opened along the strike direction (a) of the ore body. The stage transport tunnel (1) is driven toward the ore body through a segmented stage connecting tunnel (23) to the segmented transport tunnel (2). A return ramp (22) is driven upward from the segmented stage connecting tunnel (23) to connect the segmented transport tunnels (2) of each segment. The stage transport tunnel (1) is connected to a chute connecting tunnel (4) driven from the segmented transport tunnels (2) of each segment through a chute (5). S3. At the level of the lowest ore layer in the segment, from the position of the chute (5) in the plate area corresponding to the segment transport laneway (2), the stope connecting laneway (3) is excavated to enter the layer transport laneway (24), and from the layer transport laneway (24), a cutting laneway (7) is excavated along the center line of the mine room and penetrates the ore body, and the excavation is continued to form a mine room return air laneway (9) to the ventilation connecting laneway (10) in the direction (d) of the upper wall of the ore body, and the ventilation connecting laneway (10) is opened along the strike direction (a) of the ore body, and a pedestrian ventilation filling shaft (11) is excavated upward in the middle position of the plate area corresponding to the ventilation connecting laneway (10) to the stage return air connecting laneway (12) of the previous stage; then, at the ore body boundary position in the direction (e) of the ore body in the cutting laneway (7), a cutting connecting cross laneway (6) is excavated along the strike direction (a) of the ore body to create free space and free surface for the mining of this ore layer, and the mining of this ore layer is carried out; S4. After the mining of the lowest ore layer is completed, the top of the mine connecting tunnel (3) is picked and the removed roof waste rock is used as the bottom material. It is paved according to the slope of the mine connecting tunnel (3) of the upper ore layer as its bottom plate, filled and formed into a concrete surface layer (16), forming a mine connecting tunnel (3) leading to the upper ore layer, until the mining is completed and the entire mine room is filled.

2. The upward horizontal layered filling mining method of a gently inclined-inclined thick ore body according to claim 1 is characterized in that: In step S1, the stage height is controlled at 40 to 60 m, the segment height is 10 to 15 m, the length of a single mine chamber is the thickness of the ore body in the horizontal direction, and the width of a single mine chamber is controlled at 20 to 40 m along the strike direction (a) of the ore body; the thickness of the ore layer is 3.5 to 4.5 m, the thickness of the top pillar (19) is 4 to 6 m, the length of the panel area is 200 to 250 m along the strike direction (a) of the ore body, and the width of the panel area pillar (18) is 10 to 15 m.

3. The upward horizontal layered filling mining method of a gently inclined-inclined thick ore body according to claim 1 is characterized in that: A panel upper wall connecting road (17) is provided in the panel pillar (18), and the panel upper wall connecting road (17) is connected to the ventilation connecting roadway (10).

4. The upward horizontal layered filling mining method of a gently inclined-inclined thick ore body according to claim 1 is characterized in that: In step S2, two chutes (5) are set in one panel area.

5. The upward horizontal layered filling mining method of a gently inclined-inclined thick ore body according to claim 1 is characterized in that: In step S3, during mining, horizontal blastholes are drilled in the cutting tunnel (7) to carry out ore recovery. The collapsed ore is poured into the chute (5) through the stope connecting tunnel (3) - the segmented transport tunnel (2) - the chute connecting tunnel (4); the collapsed ore finally falls into the stage transport tunnel (1) at the bottom.

6. The upward horizontal layered filling mining method of a gently inclined-inclined thick ore body according to claim 5 is characterized in that: In step S3, the distance between the segmented transport tunnel (2) and the boundary in the direction of the footwall of the ore body (e) should be determined according to the segmented height and the number of layers it is responsible for mining, ensuring that the slope of the stope connection tunnel (3) formed in the ore layer it is responsible for is less than 12%.

7. The upward horizontal layered filling mining method of a gently inclined-inclined thick ore body according to claim 1 is characterized in that: After each ore layer is mined, a point pillar (8) is set. The point pillar (8) is a rectangular ore pillar of 3m×3m, and the spacing between adjacent point pillars (8) is 8 to 15m.

8. The upward horizontal layered filling mining method of a gently inclined-inclined thick ore body according to claim 1 is characterized in that: In step S4, when the ore body of the mining layer is mined, a filling retaining wall (13) is first built in the mine room return air tunnel (9) and the mining field connecting tunnel (3) to seal them, and then the first-step mining room (20) or the second-step mining room (21) of the mining layer, the mine room return air tunnel (9), the ventilation connecting tunnel (10), and the layered transportation tunnel (24) are filled, and a concrete glue layer (16) is formed on the surface of the first-step mining room (20) or the second-step mining room (21) and the layered transportation tunnel (24) of the upper mining layer.

9. The upward horizontal layered filling mining method of a gently inclined-inclined thick ore body according to claim 8, characterized in that: The first-step mining chamber (20) uses a first-step mining filling body (14) with a ash-sand mass ratio of 1:6 to 1:10; the second-step mining chamber (21) uses a second-step mining filling body (15) with a ash-sand mass ratio of 1:20.

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