Assembly type foam reserved roadway for residual ore recovery and construction method

Abstract

The invention discloses an assembling type foam reserved roadway for residual ore recovery, and relates to the technical field of underground mining, the assembling type foam reserved roadway comprises a roadway, and the roadway comprises a vault plate; haunch plates are arranged at the bottoms of the left side and the right side of the vault plate, connecting pieces are arranged between the tops of the haunch plates and the vault plate, pulley bases are connected to the bottoms of the haunch plates, a back plate is arranged on the rear end face of an inner cavity of the roadway, and a filling retaining wall is arranged on the rear end face of the roadway; the residual ore is recovered in a way of reserving a roadway, so that the problem of resource waste caused by technical bottleneck is solved, the ore recovery rate is obviously improved, the use of filling materials and the workload of secondary tunneling are reduced, the production cost is reduced, and the economic benefit of a mine is improved; the graphene foam board is pulled to a construction area after being assembled, so that the situation that people work in a high-risk goaf is avoided, the construction safety level is greatly improved, the construction process is simplified, and the complex process of traditional secondary tunneling and filling operation is avoided.

Description

Technical Field

[0001] This invention relates to the field of underground mining technology, specifically to a pre-fabricated foam roadway for residual ore recovery and its construction method. Background Technology

[0002] Residual pillar mining refers to the recovery of pillars left over from incomplete mining operations due to safety, economic, and technical factors. Traditionally, pillar mining relies on manual or mechanical methods to directly excavate the pillars, often accompanied by the excavation of backfill. However, traditional methods have some technical drawbacks when dealing with backfill: The quality and stability of the backfill material directly affect the safety of tunnel excavation. Many mining areas suffer from substandard backfill construction quality, leading to settlement and collapse problems, making subsequent excavation difficult and even preventing effective recovery. Furthermore, excavation requires personnel to enter unstable mining areas, posing a significant risk of collapse; especially in deep ore bodies, where goaf support is challenging, excavation can easily disturb the backfill material, induce collapses, and cause ground instability, creating serious safety hazards. Backfill excavation also requires substantial manpower and material resources, and the complex process results in low equipment utilization, greatly increasing the complexity and cost of the operation. Therefore, based on actual usage, we have improved the aforementioned existing technology. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this section, the abstract and title of the invention. Such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A pre-fabricated foam roadway for residual ore recovery includes a roadway, the roadway including a vaulted panel; Arched waist plates are provided at the bottom of both sides of the arched top plate. Connectors are provided between the top of the arched waist plates and the arched top plate. Pulley bases are provided at the bottom of the arched waist plates. Fixed supports are provided in the middle of the opposite side of the arched waist plates. The rear end face of the tunnel's inner cavity is equipped with a back plate, and the rear end face of the tunnel is equipped with a filling retaining wall.

[0006] Furthermore, the outer sides of both the arched top and arched waist panels are made of graphene foam boards, and the arched waist panels are vertically parallel to each other on the left and right sides of the bottom of the arched top panel.

[0007] Furthermore: all graphene foam boards include graphene foam board C, graphene foam board B is disposed inside graphene foam board C, and graphene foam board A is disposed inside graphene foam board B.

[0008] Furthermore: an observation window is provided at the center of the rear end face of the filling retaining wall, and a water filter hole is provided on the bottom right side of the rear end face of the filling retaining wall.

[0009] Furthermore, diagonal fixing supports are intersecting between the inner sides of the vaulted roof panel and the inner sides of the waist panel.

[0010] Furthermore, matching buckles and slots are provided between the bottom left and right sides of the arched panel and the top of the waist panel.

[0011] Furthermore: all connectors are bolts, and the surface of each bolt is covered with a corrosion-resistant protective layer.

[0012] A construction method for a pre-fabricated foam-filled roadway for residual ore recovery, the method comprising the following steps: Step 1: Level the foundation in the goaf area to ensure the ground is flat and firm. Concrete can be poured to maintain construction stability. Step 2: Vertically install the left and right arched waist panels onto the pulley base, connect them to the pulley base through the pre-set connecting holes, and install the fixing bracket to fix the left and right arched waist panels. Step 3: Slowly hoist the arched panels to the top of the arched waist panels, align the grooves vertically and horizontally, and then splice them together to ensure that each panel is correctly aligned. Secure them with clips and bolts. To ensure a tight connection, apply adhesive to the gaps. Step 4: Connect the diagonal fixing brackets between the arch top plate and the arch waist plate to form a stable arch structure; Step 5: Proceed with the assembly work in sequence, using clips and bolts to fix the panels together. Continue construction until the required tunnel length is reached, and the reserved tunnel assembly is completed. Step Six: Pull the assembled reserved roadway to the designated location in the goaf; Step 7: Perform the first filling, ensuring the filling height covers the pulley base to create a closed space for the graphene foam board. After curing, perform the second filling. Step 8: After the second filling and curing is completed, the graphene foam board is removed, and the reserved tunnel is built.

[0013] Compared with the prior art, the beneficial effects of the present invention are: The pre-reserved foam roadway and construction method for residual ore recovery proposed in this paper solves the problem of resource waste caused by technical bottlenecks by using pre-reserved roadways to recover residual ore, significantly improves the ore recovery rate, reduces the use of backfill materials and the workload of secondary tunneling, reduces production costs, and improves the economic benefits of the mine. After the graphene foam boards are assembled, they are pulled to the construction area, which not only avoids people working in high-risk areas and greatly improves the level of construction safety, but also simplifies the construction process and avoids the complicated process of traditional secondary tunneling and filling operations. Foam board components are detachable, low-cost, and highly adaptable, possessing excellent engineering versatility and promotional value. Their manufacturing and construction processes are relatively simple, and their lightweight and easy transportation reduce labor intensity, shorten construction time, and lower labor costs. Especially in the application of precast components, they can quickly construct the framework structure of tunnels.

[0014] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0015] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram illustrating the installation effect of the present invention; Figure 3 This is a schematic diagram of the filling retaining wall structure of the present invention; Figure 4 This is a schematic diagram of the arched panel structure of the present invention; Figure 5 This is a schematic diagram of the first filling structure of the present invention; Figure 6 This is a schematic diagram of the second filling structure of the present invention; Figure 7 This is a side view of the structure of the present invention.

[0018] In the diagram: 1. Arched roof panel; 2. Arched waist panel; 3. Connector; 4. Pulley base; 5. Fixing bracket; 6. Back panel; 7. Filling retaining wall; 8. Observation window; 9. Filter hole; 10. Graphene foam board C; 11. Graphene foam board B; 12. Graphene foam board A Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0022] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments. Example

[0023] Please see Figure 1-7 The present invention provides a technical solution: a pre-reserved foam roadway for residual ore recovery, comprising a roadway, the roadway including an arched plate 1 for forming the top support structure of the roadway; Arched waist plates 2 are provided on the bottom of both sides of the arched top plate 1. The arched waist plates 2 serve as lateral support and connection. Connectors 3 are provided between the top of the arched waist plates 2 and the arched top plate 1. Connectors 3 are used to ensure a stable connection between the arched top plate 1 and the arched waist plates 2. Pulley bases 4 are provided at the bottom of the arched waist plates 2. Pulley bases 4 facilitate the movement and adjustment of the entire tunnel. Fixed supports 5 are provided in the middle of the opposite side of the arched waist plates 2. Fixed supports 5 are used to enhance the stability and compressive strength of the structure. The rear end face of the tunnel cavity is provided with a back plate 6, which is used to seal the rear end of the tunnel and provide additional support. The rear end face of the tunnel is provided with a filling retaining wall 7, which is used to prevent leakage of filling material and maintain the internal space of the tunnel.

[0024] Preferably, the outer sides of both the arched top plate 1 and the arched waist plate 2 are made of graphene foam board. Graphene foam board has the characteristics of being lightweight, high-strength and corrosion-resistant, and is suitable for mining environments. The arched waist plate 2 is arranged vertically and parallel to the bottom left and right sides of the arched top plate 1 to ensure uniform load distribution.

[0025] Preferably, all graphene foam boards include a graphene foam board C10, which serves as the outer layer to provide the main protection. A graphene foam board B11 is disposed on the inner side of the graphene foam board C10, which serves as the middle layer to enhance the heat insulation and cushioning performance. A graphene foam board A12 is disposed on the inner side of the graphene foam board B11, which serves as the inner layer to further optimize the structural integrity.

[0026] Preferably, an observation window 8 is provided at the center of the rear end face of the filling retaining wall 7. The observation window 8 facilitates monitoring of the filling process and internal status. A water filter hole 9 is provided on the bottom right side of the rear end face of the filling retaining wall 7. The water filter hole 9 is used to drain excess water and maintain a dry environment.

[0027] Preferably, an oblique fixing bracket is provided between the inner side of the arched roof plate 1 and the inner side of the arched waist plate 2. The oblique fixing bracket can improve the shear strength and seismic resistance of the overall structure. Example

[0028] Reference Figure 1-7 This embodiment differs from the first embodiment in that: the bottom left and right sides of the arch top plate 1 and the top of the arch waist plate 2 are provided with matching buckles and slots. The buckle and slot design allows for quick assembly and disassembly, improving installation efficiency; the connectors 3 are all bolts, and the surface of the bolts is provided with a corrosion-resistant protective layer. The corrosion-resistant protective layer can extend the service life of the bolts and reduce maintenance requirements, making it suitable for humid or corrosive mining conditions.

[0029] A construction method for a pre-fabricated foam-filled roadway for residual ore recovery, characterized by the following steps: Step 1: Level the foundation in the goaf area to ensure the ground is flat and firm. Concrete can be poured to maintain construction stability. Step 2: Vertically install the left and right arched waist plates 2 on the pulley base 4 and connect them to the pulley base 4 through the preset connecting holes. At the same time, install the fixing bracket 5 to fix the left and right arched waist plates 2. Step 3: Slowly hoist the arch panel 1 to the top of the arch waist panel 2, align the upper and lower grooves and then splice them together, ensuring that each panel is correctly connected, and fix them with clips and bolts. To ensure the tightness of the connection, adhesive can be sprayed into the gaps. Step 4: Connect the diagonal fixing brackets between the arch top plate 1 and the arch waist plate 2 to form a stable arch structure; Step 5: Proceed with the assembly work in sequence, using clips and bolts to fix the panels together. Continue construction until the required tunnel length is reached, and the reserved tunnel assembly is completed. Step Six: Pull the assembled reserved roadway to the designated location in the goaf; Step Seven: (See below) Figure 5 The first filling should be carried out, and the filling height should be above the pulley base 4 to form a closed space for the graphene foam board. After curing is completed, the second filling should be carried out. Step 8: (See below) Figure 6 After the second filling and curing is completed, the graphene foam board is removed, and the reserved tunnel is constructed.

[0030] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A transfer foamed pre-patented roadway for residual ore recovery characterised in that: Includes a tunnel, which includes a vaulted panel (1); The bottom of the arched plate (1) is provided with arched waist plates (2) on both the left and right sides. The top of the arched waist plates (2) is provided with a connector (3) between the arched plate (1) and the top of the arched waist plates (2). The bottom of the arched waist plates (2) is provided with a pulley base (4). The middle of the opposite side of the arched waist plates (2) is provided with a fixed bracket (5). The rear end face of the inner cavity of the tunnel is provided with a back plate (6), and the rear end face of the tunnel is provided with a filling retaining wall (7).

2. The pre-fabricated foam roadway for residual ore recovery according to claim 1, characterized in that: The outer sides of both the arched top plate (1) and the arched waist plate (2) are made of graphene foam board, and the arched waist plate (2) is vertically parallel to the bottom left and right sides of the arched top plate (1).

3. A pre-fabricated foam roadway for residual ore recovery according to claim 1, characterized in that: The graphene foam boards all include a graphene foam board C (10), a graphene foam board B (11) is provided on the inner side of the graphene foam board C (10), and a graphene foam board A (12) is provided on the inner side of the graphene foam board B (11).

4. A pre-fabricated foam roadway for residual ore recovery according to claim 1, characterized in that: An observation window (8) is provided at the center of the rear end face of the filling retaining wall (7), and a water filter hole (9) is provided on the bottom right side of the rear end face of the filling retaining wall (7).

5. A pre-fabricated foam roadway for residual ore recovery according to claim 1, characterized in that: An oblique fixing bracket is provided between the inner side of the arched top plate (1) and the inner side of the arched waist plate (2).

6. A pre-fabricated foam-type roadway for residual ore recovery according to claim 1, characterized in that: The bottom left and right sides of the arched plate (1) and the top of the arched waist plate (2) are provided with matching buckles and slots.

7. A pre-fabricated foam roadway for residual ore recovery according to claim 1, characterized in that: All the connecting parts (3) are bolts, and the surface of each bolt is provided with a corrosion-resistant protective layer.

8. A construction method for a pre-fabricated foam roadway for residual ore recovery according to any one of claims 1-7, characterized in that: The method includes the following steps: Step 1: Level the foundation in the goaf area to ensure the ground is flat and firm. Concrete can be poured to maintain construction stability. Step 2: Vertically install the left and right arched waist plates (2) on the pulley base (4), connect them to the pulley base (4) through the preset connecting holes, and install the fixing bracket (5) at the same time to fix the left and right arched waist plates (2). Step 3: Slowly hoist the arched panel (1) to the top of the arched waist panel (2), align the grooves and splice them together, ensuring that each panel is correctly connected, and fix them with buckles and bolts. To ensure the tightness of the connection, adhesive can be sprayed into the gaps. Step 4: Connect the oblique fixing brackets between the arch top plate (1) and the arch waist plate (2) to form a stable arch structure; Step 5: Proceed with the assembly work in sequence, using clips and bolts to fix the panels together. Continue construction until the required tunnel length is reached, and the reserved tunnel assembly is completed. Step Six: Pull the assembled reserved roadway to the designated location in the goaf; Step 7: Perform the first filling, the filling height should be above the pulley base (4) to form a closed space for the graphene foam board. After curing is completed, perform the second filling. Step 8: After the second filling and curing is completed, the graphene foam board is removed, and the reserved tunnel is built.

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