Mine roadway supporting structure

Abstract

The utility model relates to a mine roadway supporting structure, which belongs to the technical field of supporting structures and comprises a roadway body and a supporting assembly, and the supporting assembly comprises at least two supporting units arranged on the roadway body. According to the mine roadway supporting structure, by combining the first anchor rods, the metal net and the sprayed concrete layer, a composite supporting structure can be formed, the supporting strength and durability are remarkably improved, the cost of the mine roadway supporting structure is reduced, meanwhile, the integrity of the supporting structure can be enhanced through the connecting pieces between the adjacent supporting units, and the supporting structure is more compact. According to the supporting structure, the supporting structure can better adapt to deformation under the complex geological condition, the strength of each supporting unit can be improved by introducing the reinforcing assembly, meanwhile, when the supporting rod in any supporting unit deforms, the potential supporting failure risk can be found and treated in time, the bottom end of each connecting rod is attached to the upper surface of the corresponding supporting rod, and therefore the supporting effect is improved. And the upper side of each supporting unit can be supported, and the stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of support structures, in particular to a support structure for a mine roadway. Background Art

[0002] When mining deeper buried or open-pit mines to a certain depth, underground mining methods need to be used. At this time, various passages need to be drilled between the ground surface and the ore body for transporting ore, ventilation, drainage, pedestrians, and various necessary preparatory projects newly excavated for metallurgical equipment to extract ore. These passages are collectively called mine roadways. When excavating mine roadways, it is necessary to support and protect the roadways to prevent the roof of the roadway from collapsing during the excavation process and causing mine disasters.

[0003] For example, Chinese Patent CN218894664U discloses a support structure for a mine roadway, which relates to the technical field of roadway support. The utility model provides a support structure for a mine roadway, including a base. A support mechanism for supporting and protecting the mine roadway is arranged on the top of the base. Universal wheels are fixedly installed at the bottom of the base. The utility model drives a threaded rod to rotate through a knob. Through the engagement of the threaded rod and a threaded sleeve, the threaded sleeve, a movable plate, and a limiting rod are vertically moved, so that an anchor rod is inserted into the roadway ground to fix the support device. By contacting the movable plate with the roadway ground and continuing to rotate the knob and the threaded rod, the support mechanism is raised, so as to facilitate the support and protection of roadways at different heights. By contacting the top surface of the first support roof with the top surface of the roadway, the second support roof and the first support roof play a double-layer protection role to improve safety.

[0004] Although the above patent facilitates the support and protection of roadways at different heights, and the top surface of the first support roof contacts the top surface of the roadway, and the second support roof and the first support roof play a double-layer protection role to improve safety, the patent uses common metal brackets for support. The support structure can maintain the stability of the roadway to a certain extent, but there are problems such as insufficient support strength, poor durability, and high cost. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a support structure for a mine roadway, which has the advantages of significantly improving the support strength and durability of the support structure and reducing costs, and solves the problems that when using common metal brackets for support, the support structure can maintain the stability of the roadway to a certain extent, but there are problems such as insufficient support strength, poor durability, and high cost.

[0006] To achieve the above object, the utility model provides the following technical solution: A supporting structure for a mine roadway, comprising a roadway body and a supporting assembly, wherein the supporting assembly includes at least two supporting units arranged on the roadway body;

[0007] Each of the supporting units includes at least two first anchor rods, a metal mesh, a shotcrete layer and a reinforcement assembly. At least two of the first anchor rods are fixed inside the roadway body. The metal mesh covers the outside of at least two first anchor rods. At least two of the first anchor rods are located on the front and back sides of the bottom end of the metal mesh. The shotcrete layer covers the inside of the metal mesh.

[0008] By adopting this technical solution, a composite supporting structure can be formed, significantly improving the supporting strength and durability of the supporting structure and reducing the cost of the supporting structure for the mine roadway.

[0009] Furthermore, a connecting piece is arranged between two adjacent supporting units to enhance the integrity of the supporting structure.

[0010] By adopting this technical solution, the integrity of the supporting structure can be enhanced.

[0011] Furthermore, the reinforcement assembly includes two fixing frames, a support rod, a mounting plate and a connecting rod. The two fixing frames are both fixed to the front and back walls of the inner cavity of the shotcrete layer by bolts. Both ends of the support rod are fixed inside the front and back fixing frames by bolts. The mounting plate is arranged on the top wall of the inner cavity of the shotcrete layer. The connecting rod is arranged on the lower surface of the mounting plate. The bottom end of the connecting rod is in contact with the upper surface of the support rod.

[0012] By adopting this technical solution,

[0013] Furthermore, at least two second anchor rods are arranged on the front and back sides of the bottom end of each shotcrete layer. At least two of the second anchor rods are arranged inside the roadway body.

[0014] By adopting this technical solution, the cost can be reduced through the shotcrete layer.

[0015] Furthermore, at least two of the second anchor rods are evenly distributed on the front and back sides of the bottom end of the shotcrete layer.

[0016] By adopting this technical solution, at least two second anchor rods on the front and back sides can improve the stability of the shotcrete layer fixed in the mine roadway.

[0017] Furthermore, the second anchor rods are of the same size as the first anchor rods.

[0018] By adopting this technical solution, the cooperation between at least two second anchor bolts and at least two first anchor bolts can improve the stability of the support structure fixed in the mine roadway.

[0019] Furthermore, the shape of the support rod is a solid rectangular body inside, and the support rod is a stainless steel rod.

[0020] By adopting this technical solution, the strength of the support unit can be improved through the support rod.

[0021] Furthermore, the front and rear fixing frames are both located on the longitudinal central axis of the shotcrete layer.

[0022] By adopting this technical solution, the stability of the support rod fixed inside the shotcrete layer is improved.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] For this mine roadway support structure, by combining the first anchor bolt, the metal mesh and the shotcrete layer, a composite support structure can be formed, significantly improving the support strength and durability, reducing the cost of the mine roadway support structure. At the same time, the connecting pieces between adjacent support units can enhance the integrity of the support structure, enabling it to better adapt to the deformation under complex geological conditions. In addition, introducing the reinforcement component can improve the strength of each support unit. At the same time, when the support rod in any one support unit deforms, the potential risk of support failure can be detected and handled in time to ensure the safe production of the mine. The bottom end of each connecting rod fits with the upper surface of each support rod, which can support the upper side of each support unit and improve the stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the present utility model;

[0026] Figure 2 It is a schematic diagram of the support unit of the present utility model;

[0027] Figure 3 It is a three-dimensional structural schematic diagram of the support rod of the present utility model.

[0028] In the figure: 1, roadway body; 2, support unit; 21, first anchor bolt; 22, metal mesh; 23, shotcrete layer; 24, reinforcement component; 241, fixing frame; 242, support rod; 243, mounting plate; 244, connecting rod; 3, connecting piece; 4, second anchor bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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.

[0030] Please refer to Figure 1 , a mine roadway support structure in this embodiment includes a roadway body 1 and a support assembly. The support assembly includes at least two support units 2 provided on the roadway body 1. The support units 2 can significantly improve the support strength and durability of the support structure and reduce costs.

[0031] In this embodiment, a connecting piece 3 is provided between two adjacent support units 2 to enhance the integrity of the support structure.

[0032] Please refer to Figures 2 - 3 , in order to significantly improve the support strength and durability of the support structure and reduce costs, in this embodiment, each support unit 2 includes at least two first anchor bolts 21, a metal mesh 22, a shotcrete layer 23 and a reinforcement assembly 24. At least two first anchor bolts 21 are all fixed inside the roadway body 1. The metal mesh 22 covers the outside of at least two first anchor bolts 21. At least two first anchor bolts 21 are both located on the front and back sides of the bottom end of the metal mesh 22. The shotcrete layer 23 covers the inside of the metal mesh 22.

[0033] In this embodiment, by combining the first anchor bolts 21, the metal mesh 22 and the shotcrete layer 23, a composite support structure can be formed, significantly improving the support strength and durability and reducing the cost of the mine roadway support structure.

[0034] In this embodiment, the reinforcement assembly 24 includes two fixing frames 241, a support rod 242, a mounting plate 243 and a connecting rod 244. The two fixing frames 241 are both fixed to the front and back walls of the inner cavity of the shotcrete layer 23 by bolts. Both ends of the support rod 242 are fixed inside the front and back fixing frames 241 by bolts. The mounting plate 243 is arranged on the top wall of the inner cavity of the shotcrete layer 23. The connecting rod 244 is arranged on the lower surface of the mounting plate 243. The bottom end of the connecting rod 244 is in contact with the upper surface of the support rod 242.

[0035] In this embodiment, the connecting piece 3 between adjacent support units 2 can enhance the integrity of the support structure, enabling it to better adapt to the deformation under complex geological conditions. In addition, introducing the reinforcement assembly 24 can improve the strength of each support unit 2.

[0036] In this embodiment, no less than two second anchor bolts 4 are provided on the front and rear sides of the bottom end of each shotcrete layer 23. The no less than two second anchor bolts 4 are all arranged inside the roadway body 1. The no less than two second anchor bolts 4 are evenly distributed on the front and rear sides of the bottom end of the shotcrete layer 23. The second anchor bolts 4 are of the same size as the first anchor bolts 21. The support rod 242 is in the shape of a solid rectangular body inside. The support rod 242 is a stainless steel rod. The front and rear side fixing frames 241 are both located on the longitudinal central axis of the shotcrete layer 23.

[0037] It should be noted that when the support rod 242 in any one of the support units 2 is deformed, the potential risk of support failure can be detected and processed in time to ensure the safe production of the mine. The bottom end of each connecting rod 244 is attached to the upper surface of each support rod 242, which can support the upper side of each support unit 2. At the same time, no less than two second anchor bolts 4 are provided on the front and rear sides of the bottom end of each shotcrete layer 23, which can improve the stability of the connection and fixation between the support structure and the roadway body 1.

[0038] The working principle of the above embodiment is as follows:

[0039] By combining the first anchor bolts 21, the metal mesh 22 and the shotcrete layer 23, a composite support structure can be formed, significantly improving the support strength and durability, reducing the cost of the mine roadway support structure. At the same time, the connecting pieces 3 between adjacent support units 2 can enhance the integrity of the support structure, enabling it to better adapt to the deformation under complex geological conditions. In addition, introducing the reinforcement component 24 can improve the strength of each support unit 2. At the same time, when the support rod 242 in any one of the support units 2 is deformed, the potential risk of support failure can be detected and processed in time to ensure the safe production of the mine. The bottom end of each connecting rod 244 is attached to the upper surface of each support rod 242, which can support the upper side of each support unit 2. At the same time, no less than two second anchor bolts 4 are provided on the front and rear sides of the bottom end of each shotcrete layer 23, which can improve the stability of the connection and fixation between the support structure and the roadway body 1.

Claims

1. A mine roadway support structure, comprising a roadway body (1) and a support assembly, characterized in that: The support assembly includes at least two support units (2) provided on the roadway body (1). Each support unit (2) includes at least two first anchor bolts (21), a metal mesh (22), a shotcrete layer (23), and a reinforcement assembly (24). At least two of the first anchor bolts (21) are fixed inside the roadway body (1). The metal mesh (22) covers the outside of at least two first anchor bolts (21). At least two of the first anchor bolts (21) are located on the front and back sides of the bottom end of the metal mesh (22). The shotcrete layer (23) covers the inside of the metal mesh (22).

2. The support structure for a mine roadway according to claim 1, wherein: A connecting piece (3) is provided between two adjacent support units (2) to enhance the integrity of the support structure.

3. A mine roadway support structure according to claim 1, characterized in that: The reinforcement assembly (24) includes two fixing frames (241), a support rod (242), a mounting plate (243), and a connecting rod (244). The two fixing frames (241) are both fixed to the front and back walls of the inner cavity of the shotcrete layer (23) by bolts. Both ends of the support rod (242) are fixed inside the front and back fixing frames (241) by bolts. The mounting plate (243) is provided on the top wall of the inner cavity of the shotcrete layer (23). The connecting rod (244) is provided on the lower surface of the mounting plate (243). The bottom end of the connecting rod (244) is in contact with the upper surface of the support rod (242).

4. A mine roadway support structure according to claim 1, characterized in that: At least two second anchor bolts (4) are provided on the front and back sides of the bottom end of each shotcrete layer (23). At least two of the second anchor bolts (4) are provided inside the roadway body (1).

5. The support structure for a mine roadway according to claim 4, characterized in that: At least two of the second anchor bolts (4) are evenly distributed on the front and back sides of the bottom end of the shotcrete layer (23).

6. A mine roadway support structure according to claim 4, characterized in that: The second anchor bolts (4) are of the same size as the first anchor bolts (21).

7. A mine roadway support structure according to claim 3, characterized in that: The support rod (242) is in the shape of a solid rectangular body inside and is a stainless steel rod.

8. A mine roadway support structure according to claim 3, characterized in that: The front and back fixing frames (241) are both located on the longitudinal axis of the shotcrete layer (23).

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