Anchor cable, anchor rod and steel belt combined supporting structure of metal mine stope roof

Abstract

The utility model discloses an anchor cable, anchor rod and steel belt combined supporting structure of a metal mine stope top plate. Four corners of the stope top plate are supported by corner supporting groups; each corner support group comprises an anchor cable, a steel belt and an anchor rod; the two ends of each steel belt are fixed to the top plate through anchor cables, and the middle of each steel belt is fixed to the top plate through anchor rods. The middle part of the stope top plate is supported by a middle supporting group; the middle supporting set comprises anchor cables, steel belts and anchor rods, the length direction of the steel belts is parallel to the short sides of the stope, the two ends of the steel belts are fixed to the top plate through the anchor cables, and the middle of the steel belts are fixed to the top plate of the stope through the anchor rods. The supporting structure can carry out targeted supporting on different weak positions; the position with the weakest stability of the stope roof is supported, the supporting cost is saved, the supporting efficiency is improved, and the method has the advantages of being stable in supporting and convenient to construct.

Description

Technical Field

[0001] The utility model relates to a roof support structure for a rock mining field, in particular to an anchor cable, anchor rod and steel belt combined support structure for the roof of a metal mining field. Background Art

[0002] Roof support in mining areas is a necessary measure to ensure the safety of workers and equipment. At present, there are many methods for supporting the roof of mining areas in metal mines. According to the different degrees of stability of ore rock, there are mainly anchor support, anchor cable support, anchor or anchor cable + shotcrete combined anchor + anchor cable combined support and anchor shotcrete combined support. Each support method provides comprehensive support for the roof of the mining area, which can effectively ensure the safety of the roof of the mining area, but the construction cost is high and the efficiency is low. Therefore, it is necessary to study a support method with high construction efficiency, low economic cost and high safety for the roof support of mining areas in metal mines, which can not only ensure the stability of the roof of the mining area, but also improve efficiency and reduce costs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an anchor cable, anchor rod and steel belt combined supporting structure for the top plate of a metal mine site with high construction efficiency and good supporting effect.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: the four corners of the mine roof are supported by corner support groups; the corner support group includes anchor cables, steel belts and anchor rods; there are several steel belts and they are arranged radially in a fan shape, both ends of the steel belts are fixed to the roof by anchor cables, and the middle part is fixed to the roof by anchor rods; the middle part of the mine roof is supported by a middle support group; the middle support group includes anchor cables, steel belts and anchor rods, the length direction of the steel belts is parallel to the short side of the mine, the two ends of the steel belts are fixed to the roof by anchor cables, and the middle part is fixed to the mine roof by anchor rods.

[0005] Furthermore, the steel belts in the corner support group are arranged in a fan shape with the intersection point 5m to 7m away from the short side of the mining area and 1.2m to 2.5m away from the long side as the vertex.

[0006] Furthermore, there are four steel belts in each corner support group, and the angles between the length direction of the steel belts and the horizontal plane of the length direction of the mining field are 5°~10°, 30°~40°, 60°~70° and 100°~110° respectively.

[0007] Furthermore, the lengths of the steel belts in each direction in the corner support group are 4m to 6m, 4m to 6m, 3m to 4.5m and 3m to 4.5m respectively.

[0008] Furthermore, an anchor rod is designed for fixing at intervals of 1.5m to 2.0m in the middle of the steel belt.

[0009] Furthermore, in the corner support group, the length of the anchor cable is 10m to 15m, and the length of the anchor rod is 1.8m to 2.5m.

[0010] Furthermore, the middle support group is provided with a plurality of steel belts in parallel, and the spacing between the steel belts is 1.0m to 2.0m.

[0011] Furthermore, in the middle support group, the length of the steel belt is 5m to 8m, the length of the anchor cable is 10m to 15m, and an anchor rod is designed for fixing at intervals of 1.5m to 2.0m in the middle of the steel belt.

[0012] The beneficial effect produced by adopting the above-mentioned technical scheme is that: the utility model adopts corner support groups for support at the four corners of the mine roof and adopts middle support groups for support in the middle, so that targeted support can be provided for different weak positions; it not only supports the weakest position of the mine roof stability, but also saves support costs and improves support efficiency, and has the characteristics of stable support and convenient construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 A-A section structural diagram;

[0016] Figure 3 yes Figure 1 Schematic diagram of the B-B section structure.

[0017] In the figure: 1. Anchor cable; 2. Anchor rod; 3. Steel belt. DETAILED DESCRIPTION

[0018] Figure 1 , Figure 2 , Figure 3 As shown, the anchor cable, anchor rod and steel belt combined support structure of the mining area roof of the metal mine includes a corner support group and a middle support group. The four corners of the mining area roof are supported by the corner support group, and the middle of the mining area roof is supported by the middle support group. It is especially suitable for narrow and long mining areas with a mining area width of 10m to 15m and a length of 40m to 60m.

[0019] Figure 1 , Figure 2 , Figure 3As shown, the corner support group of the anchor cable, anchor rod and steel belt combined support structure of the roof of the metal mine mining area adopts the following structure: it includes anchor cables 1, steel belts 3 and anchor rods 2; each corner support group has several steel belts 3 and they are arranged radially in a fan shape, and the steel belts of the four corner support groups are symmetrical to each other in the length and width directions of the mining area. The steel belt 3 is preferably arranged in a fan shape with the intersection of the short side of the mining field 5m to 7m and the long side 1.2m to 2.5m as the vertex. The number of steel belts in each corner support group is preferably four. The angles between the length direction of the steel belt and the horizontal plane of the length direction of the mining field are 5° to 10°, 30° to 40°, 60° to 70° and 100° to 110° respectively. The length of the steel belt in the direction of the angle of 5° to 10° is 4m to 6m, the length of the steel belt in the direction of the angle of 30° to 40° is 4m to 6m, the length of the steel belt in the direction of the angle of 60° to 70° is 3m to 4.5m, and the length of the steel belt in the direction of the angle of 100° to 110° is 3m to 4.5m; the width of the steel belt is 0.2m to 0.3m. Both ends of the steel belt 3 are fixed to the roof by anchor cables 1, and the length of the anchor cables (1) is 10m to 15m. The middle part of the steel belt 3 is fixed to the top plate by anchor rods 2. Preferably, an anchor rod 2 is designed to be fixed at intervals of 1.5m to 2.0m in the middle part of the steel belt, and the length of the anchor rod 2 is 1.8m to 2.5m.

[0020] Figure 1 , Figure 2 , Figure 3 As shown, the middle support group of the anchor cable, anchor rod and steel belt combined support structure of the mining site roof of the metal mine adopts the following structure: including anchor cable 1, steel belt 3 and anchor rod 2. The length direction of the steel belt 3 is parallel to the short side of the mining site, and the middle of the length direction of the steel belt is located in the middle of the width direction of the mining site; it is best to set a number of steel belts 3 in parallel, and the spacing between the steel belts 3 is 1.0m to 2.0m. The steel belt is preferably 5m to 8m long and 0.2m to 0.3m wide. The two ends of the steel belt 3 are fixed to the roof by anchor cables 1, and the length of the anchor cables is 10m to 15m. The middle of the steel belt 3 is fixed to the mining site roof by anchor rods 2. It is best to design an anchor rod for fixing at intervals of 1.5m to 2.0m in the middle of the steel belt, and the length of the anchor rod 2 is 1.8m to 2.5m.

Claims

1. An anchor cable, anchor rod and steel belt joint support structure for the roof of a metal mine, characterized in that: The four corners of the mine roof are supported by corner support groups; the corner support group comprises anchor cables (1), steel belts (3) and anchor rods (2); there are a plurality of steel belts (3) arranged radially in a fan-shaped manner, both ends of the steel belts (3) are fixed to the roof by anchor cables (1), and the middle part is fixed to the roof by anchor rods (2); the middle part of the mine roof is supported by a middle support group; the middle support group comprises anchor cables (1), steel belts (3) and anchor rods (2), the length direction of the steel belts (3) is parallel to the short side of the mine, both ends of the steel belts (3) are fixed to the roof by anchor cables (1), and the middle part is fixed to the mine roof by anchor rods (2).

2. The anchor cable, anchor rod and steel belt combined support structure of the metal mine roof according to claim 1, characterized in that: The steel belts (3) in the corner support group are arranged in a fan shape with the intersection point 5m to 7m away from the short side of the stope and 1.2m to 2.5m away from the long side as the vertex.

3. The anchor cable, anchor rod and steel belt combined support structure of the metal mine roof according to claim 1, characterized in that: There are four steel belts (3) in each corner support group, and the angles between the length direction of the steel belts and the horizontal plane of the length direction of the mining field are 5° to 10°, 30° to 40°, 60° to 70° and 100° to 110° respectively.

4. The anchor cable, anchor rod and steel belt combined support structure for the roof of a metal mine according to claim 3, characterized in that: The lengths of the steel strips in each direction of the corner support group are 4m to 6m, 4m to 6m, 3m to 4.5m and 3m to 4.5m respectively.

5. The anchor cable, anchor rod and steel belt combined support structure for the roof of a metal mine according to claim 4, characterized in that: An anchor rod (2) is designed for fixing at intervals of 1.5 m to 2.0 m in the middle of the steel belt.

6. The anchor cable, anchor rod and steel belt combined support structure for the roof of a metal mine according to claim 1, characterized in that: The corner support group has an anchor cable (1) with a length of 10m to 15m and an anchor rod (2) with a length of 1.8m to 2.5m.

7. An anchor cable, anchor rod and steel belt combined support structure for the roof of a metal mine according to any one of claims 1 to 6, characterized in that: The middle support group is provided with a plurality of steel belts (3) in parallel, and the spacing between the steel belts (3) is 1.0 m to 2.0 m.

8. The anchor cable, anchor rod and steel belt combined support structure for the roof of a metal mine according to claim 7, characterized in that: In the middle support group, the length of the steel belt is 5m to 8m, the length of the anchor cable is 10m to 15m, and an anchor rod is designed for fixing at intervals of 1.5m to 2.0m in the middle of the steel belt.

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