Reconstruction filling structure based on mining environment
By using isolation and support mechanisms in mining tunnels and injecting cement slurry with grouting pipes, the uneven filling problem caused by unevenness in the mining tunnels is solved, and efficient and stable filling effect is achieved, reducing costs and surface impact.
Patent Information
- Application Number
- CN202422551537.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The interior of the mining tunnel is uneven, and the filling material made of cement and aggregate is not fluid enough, resulting in gas accumulation and space that is difficult to fill, resulting in uneven filling and increasing tunnel instability.
The isolation mechanism, support mechanism and slurry filling mechanism are used, including metal mesh and cement columns, and cement slurry is injected into the grouting pipe, and the metal mesh is used to support the mixed filler. The cement slurry has high fluidity to fill the unfilled space, forming a stable mixed layer and cement layer.
Improve filling efficiency and stability, reduce the impact on the surface, ensure the stability and safety of mining tunnels, and reduce costs.
Smart Images
Figure CN223136199U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mining tunnel filling, and specifically relates to a reconstituted filling structure based on the mining environment. Background Art
[0002] A mining tunnel refers to the underground mining tunnel left after the ore body is mined out during the process of mineral resource exploitation. Mining tunnel filling refers to the process of filling certain materials into the mining tunnel (i.e., the underground space left after mining) during the mining process to control ground pressure, prevent surface subsidence, protect the environment, and improve the resource recovery rate.
[0003] When filling the mined-out mining tunnel, a commonly used method is to use a mixture of cement slurry and aggregate for filling. The cement slurry serves as a binder and is mixed with the aggregate (such as sand, gravel, etc.) to form a filling body with a certain strength and stability. The prepared filling material is transported into the mining tunnel through a conveying system, such as a pipeline or a conveyor belt. After the filling material is transported into the mining tunnel, it gradually fills the space of the mining tunnel. As the filling material is continuously added, the mixture begins to solidify and harden in the mining tunnel, forming a support structure, thereby providing a support force for the upper rock layer and preventing the rock layer from collapsing and the surface from subsiding.
[0004] The deficiencies of the existing technical solutions are as follows: When filling the mined-out mining tunnel, since these areas are usually uneven inside and the filling material composed of cement and aggregate has insufficient fluidity, it is easy to cause gas to accumulate during the filling process, forming spaces that are difficult to fill, thereby resulting in uneven filling. This uneven filling will form voids in the mining tunnel after the material solidifies, thus increasing the instability of the mining tunnel and potentially posing a threat to mine safety. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a reconstituted filling structure based on the mining environment to solve the technical problem in the prior art that due to the usually uneven inside of the mining tunnel and the insufficient fluidity of the filling material composed of cement and aggregate, gas is likely to accumulate during the filling process, forming spaces that are difficult to fill.
[0006] The technical problem to be solved by the utility model can be realized through the following technical solutions:
[0007] A reclamation filling structure based on a mining environment, comprising an isolation mechanism for isolating gravel, a grouting mechanism for filling cement slurry into the mining tunnel, a support mechanism for supporting the isolation mechanism and the grouting mechanism, as well as a mixing layer and a cement layer. The mixing layer and the cement layer are both laid inside the mining tunnel, the cement layer is located above the mixing layer, multiple groups of the isolation mechanism and the support mechanism are provided, the isolation mechanism is cooperatively connected with the support mechanism, and the isolation mechanism and the support mechanism are arranged equidistantly inside the mining tunnel. The isolation mechanism, the support mechanism, and the grouting mechanism are arranged inside the mixing layer and the cement layer. The mixing layer is composed of solid mining waste and cement; each group of the isolation mechanism includes a metal mesh, and each group of the metal meshes is cooperatively connected between two corresponding groups of the support mechanisms.
[0008] As a further solution of the utility model: each group of the support mechanism includes a cement column, a fixing sleeve is fixedly connected to each group of the cement columns, a first connecting plate is fixedly connected to each group of the fixing sleeves, second connecting plates are fixedly connected to both sides of each group of the metal meshes, and each group of the second connecting plates is bolted to the corresponding first connecting plate.
[0009] As a further solution of the utility model: the grouting mechanism includes a grouting pipe, the grouting pipe is located at the top of the mining tunnel, and multiple groups of fixing components are arranged equidistantly and cooperatively on the grouting pipe. Each group of the fixing components is cooperatively connected to two corresponding groups of the cement columns.
[0010] As a further solution of the utility model: a connecting block is fixedly connected to each group of the cement columns, each group of the fixing components includes a connecting rod fixedly connected to the corresponding connecting block, and a limiting sleeve cooperating with the grouting pipe is fixedly connected to the connecting rod.
[0011] As a further solution of the utility model: a grouting port is arranged at the upper end of each group of the cement columns.
[0012] The beneficial effects of the utility model:
[0013] 1. When the utility model is applied, the metal mesh can be fixed by the cement column, and then the mixed filler is filled inside the metal mesh. The metal mesh is responsible for holding the mixed filler, so as to facilitate the filling operation. During filling, the metal mesh does not need to be recovered, and the next stage of filling can be directly carried out, and the metal mesh can be directly left in the filler, thereby improving the filling efficiency. At the same time, since the metal mesh plays a supporting role for the filler, the stability of the mixed filler after solidification is higher. After the bottom of the mining tunnel is filled with the mixed filler, the cement slurry is pressed into the mining tunnel through the grouting pipe. Due to the high fluidity of the cement slurry, the cement slurry can flow to each unfilled space, and the volume change of the cement slurry after solidification is small, so as to ensure that the influence on the ground surface after the mining tunnel is filled is small, and thus ensure the filling effect.
[0014] 2. When the present utility model is applied, the filling material used includes solid wastes such as tailings sand, waste rock, fly ash, etc. that were previously abandoned in mining. First, the solid waste is crushed to a certain extent, and then mixed and stirred evenly with cement to form a mixed filling material, thereby reducing the input cost by recycling the solid mining waste. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present utility model will be further described below with reference to the accompanying drawings.
[0016] Figure 1 is a schematic structural view of the present utility model after filling a mining tunnel;
[0017] Figure 2 is a schematic structural view of a mining tunnel and an internal support assembly of the mining tunnel of the present utility model;
[0018] Figure 3 is a schematic structural view of the isolation mechanism of the present utility model;
[0019] Figure 4 is a schematic structural view of the support mechanism of the present utility model.
[0020] In the figure: 1. Mining tunnel; 2. Mixed layer; 3. Cement layer; 4. Support mechanism; 401. Cement column; 402. Fixed sleeve; 403. First connecting plate; 404. Connecting block; 405. Grouting port; 5. Isolation mechanism; 501. Metal mesh; 502. Second connecting plate; 6. Grout filling mechanism; 601. Grouting pipe; 602. Connecting rod; 603. Limiting sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0022] As Figures 1 - 4 shown, a reconstructed filling structure based on a mining environment includes an isolation mechanism 5 for isolating gravel, a grout filling mechanism 6 for filling cement slurry into the mining tunnel 1, a support mechanism 4 for supporting the isolation mechanism 5 and the grout filling mechanism 6, as well as a mixed layer 2 and a cement layer 3. The mixed layer 2 and the cement layer 3 are both laid inside the mining tunnel 1, and the cement layer 3 is located above the mixed layer 2. The isolation mechanism 5, the support mechanism 4, and the grout filling mechanism 6 are arranged inside the mixed layer 2 and the cement layer 3. The mixed layer 2 is composed of solid mining waste and cement, and the input cost is reduced by recycling the solid mining waste.
[0023] In order to sequentially isolate and fill each part of the mining tunnel 1, multiple sets of isolation mechanisms 5 and support mechanisms 4 are provided. The support mechanisms 4 are arranged opposite to each other on both sides of the isolation mechanism 5. Each set of isolation mechanism 5 includes a metal mesh 501, and each set of metal meshes 501 is cooperatively connected between the corresponding two sets of support mechanisms 4. The metal mesh 501 is used to block the mixture of mining waste and cement. The isolation mechanisms 5 and the support mechanisms 4 are arranged at equal intervals inside the mining tunnel 1, so as to facilitate the sequential isolation and filling of each part of the mining tunnel 1.
[0024] In some specific implementation schemes, in order to realize the reuse of the metal mesh 501, each set of support mechanism 4 includes a cement column 401. A fixing sleeve 402 is fixedly connected to each set of cement columns 401. A first connecting plate 403 is fixedly connected to each set of fixing sleeves 402. Second connecting plates 502 are fixedly connected to both sides of each set of metal meshes 501. Each set of second connecting plates 502 is bolted to the corresponding first connecting plate 403. The metal mesh 501 is fixed between the corresponding two sets of second connecting plates 502. After the filling of the previous stage is completed, the bolts on the second connecting plate 502 can be disassembled after the cement solidifies, so as to facilitate the reuse of the metal mesh 501.
[0025] During filling, the metal mesh 501 can also not be recycled, and the next stage of filling can be directly carried out. The metal mesh 501 is directly left in the filler, so as to improve the filling efficiency. At the same time, since the metal mesh 501 plays a supporting role for the filler, the stability of the mixed filler after solidification is higher.
[0026] A grouting port 405 is provided at the upper end of each set of cement columns 401 for filling cement inside the cement columns 401, so as to improve the supporting capacity of the cement columns 401 and ensure the stability after filling.
[0027] In some specific embodiments, in order to fill the remaining space inside the mining tunnel 1, the grouting mechanism 6 includes a grouting pipe 601. The grouting pipe 601 is located at the top of the mining tunnel 1 and is used to inject cement slurry into the mining tunnel 1. A plurality of fixing components are arranged at equal intervals on the grouting pipe 601 in a cooperative manner. A connecting block 404 is fixedly connected to each cement column 401. Each fixing component includes a connecting rod 602 fixedly connected to the corresponding connecting block 404. A limiting sleeve 603 that cooperates with the grouting pipe 601 is fixedly connected to the connecting rod 602. The limiting sleeve 603 is used to fix the grouting pipe 601 to ensure that the grouting pipe 601 is always located above the top of the mining tunnel 1, so as to facilitate the filling of the remaining space. The grouting pipe 601 is responsible for pressing the cement slurry into the mining tunnel 1. Due to the high fluidity of the cement slurry, the cement slurry can flow into each unfilled space, and the volume change of the cement slurry after solidification is small, thus ensuring that the impact on the ground surface after the mining tunnel 1 is filled is small. The cement slurry located at the upper end of the mining tunnel 1 solidifies to form a cement layer 3, and the mixture of cement and mining waste located at the lower end of the mining tunnel 1 solidifies to form a mixed layer 2.
[0028] To facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of the embodiments of this solution will be described below in combination with a specific application scenario:
[0029] When it is necessary to fill the mining tunnel 1, solid waste such as tailings sand, waste rock, fly ash, etc. that was previously abandoned in mining needs to be collected, first crushed to a certain extent, and then mixed and stirred evenly with cement to form a mixed filling material, so as to reduce the input cost by recycling the solid mining waste;
[0030] Before filling, cement columns 401 are symmetrically placed on both sides inside the mining tunnel 1. When filling, it is necessary to first fill the deepest position of the mining tunnel 1. The metal mesh 501 is fixed through the first connecting plate 403 and the second connecting plate 502. Then, the mixed filling material is filled inside the metal mesh 501. The metal mesh 501 is responsible for holding the mixed filling material, thus facilitating the filling operation. When the mixed filling material spreads to about 10 cm from the upper end of the metal mesh 501, the filling is stopped. After the cement solidifies, the bolts on the second connecting plate 502 are removed, which is convenient for the recycling of the metal mesh 501. During filling, the metal mesh 501 can also not be recycled, and the next stage of filling can be directly carried out, and the metal mesh 501 can be directly left in the filling material, thus improving the filling efficiency. At the same time, since the metal mesh 501 plays a supporting role for the filling material, the stability of the mixed filling material after solidification is higher. The mining tunnel 1 is segmented and isolated and filled in turn in the above manner. After the bottom of the mining tunnel 1 is filled with the mixed filling material, the cement slurry is pressed into the mining tunnel 1 through the grouting pipe 601. Due to the high fluidity of the cement slurry, the cement slurry can flow into each unfilled space, and the volume change of the cement slurry after solidification is small, thus ensuring that the impact on the ground surface after the mining tunnel 1 is filled is small, and thus ensuring the filling effect.
[0031] The above has described an embodiment of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.
Claims
1. A reconstructed filling structure based on a mining environment, characterized in that , including an isolation mechanism (5) for isolating gravel, a grouting mechanism (6) for filling the inside of the mining tunnel (1) with cement slurry, a support mechanism (4) for supporting the isolation mechanism (5) and the grouting mechanism (6), and a mixing layer (2) and a cement layer (3). The mixing layer (2) and the cement layer (3) are both laid inside the mining tunnel (1). The cement layer (3) is located above the mixing layer (2). A plurality of groups of the isolation mechanism (5) and the support mechanism (4) are provided. The isolation mechanism (5) is cooperatively connected with the support mechanism (4). The isolation mechanism (5) and the support mechanism (4) are equally spaced and arranged inside the mining tunnel (1). The isolation mechanism (5), the support mechanism (4), and the grouting mechanism (6) are arranged inside the mixing layer (2) and the cement layer (3). The mixing layer (2) is composed of solid mining waste and cement; each group of the isolation mechanism (5) includes a wire mesh (501), and each group of the wire mesh (501) is cooperatively connected between two corresponding groups of the support mechanism (4).
2. The reclamation filling structure based on the mining environment according to claim 1, wherein Each group of the support mechanism (4) includes a cement column (401). A fixing sleeve (402) is fixedly connected to each group of the cement columns (401). A first connecting plate (403) is fixedly connected to each group of the fixing sleeves (402). Second connecting plates (502) are fixedly connected to both sides of each group of the wire meshes (501). Each group of the second connecting plates (502) is bolted to the corresponding first connecting plate (403).
3. The reclamation filling structure based on the mining environment according to claim 2, characterized in that The grouting mechanism (6) includes a grouting pipe (601). The grouting pipe (601) is located at the top of the mining tunnel (1). A plurality of groups of fixing components are arranged on the grouting pipe (601) at equal intervals and in a cooperative manner. Each group of the fixing components is cooperatively connected to two corresponding cement columns (401).
4. A reconstructed filling structure based on a mining environment according to claim 3, characterized in that, A connecting block (404) is fixedly connected to each group of the cement columns (401). Each group of the fixing components includes a connecting rod (602) fixedly connected to the corresponding connecting block (404). A limiting sleeve (603) cooperating with the grouting pipe (601) is fixedly connected to the connecting rod (602).
5. A reconstructed filling structure based on a mining environment according to claim 2, characterized in that, A grouting port (405) is provided at the upper end of each group of the cement columns (401).