Coal body supporting device for mine coal roadway tunneling

Abstract

The utility model discloses a coal body supporting device for mine coal roadway tunneling, which comprises a plurality of anchor rods, one end of each anchor rod is anchored into a coal body, the other end of each anchor rod is connected with a metal net, and the bottom of the metal net is connected with isolation cloth. Crushed coal bodies during tunneling of a mine coal roadway are collected through the metal net, then the bottom of the metal net is connected with the isolation cloth, the leaked coal bodies fall into the isolation cloth, and it is guaranteed that anchor rod supporting is effective. Moreover, in order to ensure safety and prevent spontaneous combustion of the coal body subjected to isolation and leaking stoppage, the isolation cloth is made of a flame-retardant and antistatic material, and a plurality of ventilation holes are formed in the isolation cloth, so that the ventilation effect is enhanced, and the potential safety hazard of spontaneous combustion of the coal body is further eliminated.

Description

Technical Field

[0001] The utility model relates to the field of coal mine excavation equipment, in particular to a coal body supporting device for coal tunnel excavation in a mine. Background Art

[0002] Anchor rods are a basic component of modern coal mine tunnel support. Anchor rods reinforce the surrounding rock of the tunnel so that the surrounding rock supports itself. During the excavation of coal tunnels in mines, the coal at the excavation face will be soft and broken, so it is usually necessary to use metal mesh with anchor rods for support. However, due to the small particle size of the broken coal, it is easy to leak out of the metal mesh holes, which will cause the anchor rod support to fail. When using non-porous components with anchor rod support, the ventilation effect is poor, which is easy to cause the coal body to spontaneously combust after isolation and plugging, posing a major safety hazard. Utility Model Content

[0003] The utility model provides a coal body supporting device for coal tunneling in a mine, aiming to solve the problem that when supporting by metal mesh in combination with anchor rods, the coal body is easy to leak out, while when supporting by non-porous parts in combination with anchor rods, the ventilation effect is poor, which easily causes spontaneous combustion of the coal body and poses a great safety hazard.

[0004] To achieve its purpose, the utility model adopts the following technical solutions:

[0005] A coal body support device for coal tunnel excavation in a mine comprises a plurality of anchor rods, one end of each anchor rod is anchored in the coal body and the other end is connected to a metal mesh, an isolation cloth is connected to the bottom of the metal mesh, and a plurality of ventilation holes are arranged on the isolation cloth.

[0006] Furthermore, the size of the isolation cloth is larger than that of the metal mesh.

[0007] Furthermore, the ventilation holes are arranged at equal intervals.

[0008] Furthermore, the spacing between adjacent ventilation holes is 50-100 mm.

[0009] Furthermore, the diameter of the ventilation hole is 3-5 mm.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The coal support device provided by the utility model uses a metal mesh to collect the broken coal during excavation of the coal tunnel in the mine, and then connects an isolation cloth to the bottom of the metal mesh so that the leaked coal falls into the isolation cloth. The metal mesh and the isolation cloth are used in combination to ensure the effectiveness of the anchor support.

[0012] 2. To ensure safety and prevent the coal body from spontaneous combustion during isolation and plugging, the isolation cloth is made of flame-retardant and anti-static materials. In addition, multiple ventilation holes are evenly spaced on the isolation cloth to enhance the ventilation effect and further eliminate the safety hazard of spontaneous combustion of the coal body.

[0013] 3. The isolation cloth of the utility model is made of waste air ducts, which achieves the purpose of repairing and reusing waste, meets the national requirements of energy conservation and environmental protection, and is simple to make and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the coal body support device of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the coal support device without using isolation cloth;

[0016] Figure 3 This is a schematic diagram of the isolation cloth structure of the utility model;

[0017] In the figure: 1-anchor rod; 2-metal mesh; 3-coal body; 4-isolation cloth; 5-ventilation hole. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] like Figure 1-3 As shown, the utility model is a coal body supporting device for coal tunnel excavation in a mine, comprising a plurality of anchor rods 1, one end of the anchor rod 1 being anchored into the coal body 3, and the other end being connected to a metal mesh 2, an isolation cloth 4 being connected to the bottom of the metal mesh 2, and the size of the isolation cloth 4 being larger than the size of the metal mesh 2, so as to ensure that the coal body 3 will not leak sideways after falling into the isolation cloth 4; a plurality of ventilation holes 5 with a hole diameter of 5 mm are equidistantly arranged on the isolation cloth 4, and the spacing between adjacent ventilation holes 5 is 100 mm.

[0020] During the excavation of coal tunnels in a mine, the coal body 3 at the excavation working face will become soft and broken after being stressed, and fall into the metal mesh 2. The particle size of the broken coal body is generally small, and it is easy to leak out from the holes of the metal mesh 2, resulting in failure of the support of the anchor rod 1. Therefore, an isolation cloth 4 is connected to the bottom of the metal mesh 2 so that the leaked coal body 3 falls into the isolation cloth 4 to ensure the effectiveness of the support of the anchor rod 1. In addition, in order to ensure safety and prevent the coal body 3 that is isolated and blocked from spontaneous combustion, the isolation cloth 4 is made of flame-retardant and antistatic materials. In addition, multiple ventilation holes 5 are equidistantly arranged on the isolation cloth 4 to enhance the ventilation effect and further eliminate the safety hazard of spontaneous combustion of the coal body 4.

Claims

1. A coal support device for coal tunneling in a mine, comprising a plurality of anchor rods (1), characterized in that: One end of the anchor rod (1) is anchored in the coal body (3), and the other end is connected to the metal mesh (2). The bottom of the metal mesh (2) is connected to an isolation cloth (4); and a plurality of ventilation holes (5) are provided on the isolation cloth (4).

2. A coal body support device for coal tunneling in a mine as claimed in claim 1, characterized in that: The size of the isolation cloth (4) is larger than the size of the metal mesh (2).

3. A coal body support device for coal tunneling in a mine as claimed in claim 1, characterized in that: The ventilation holes (5) are arranged at equal intervals.

4. A coal body support device for coal tunneling in a mine as claimed in claim 3, characterized in that: The distance between adjacent ventilation holes (5) is 50-100 mm.

5. A coal body support device for coal tunneling in a mine as claimed in any one of claims 1 to 4, characterized in that: The diameter of the ventilation hole (5) is 3-5 mm.

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