A construction method of support device for supporting coal and rock mass
A technology of a support device and a construction method, which is applied to shaft equipment, bolt installation, earth-moving drilling, etc., can solve the problems of poor roadway formation, high material cost, poor support effect, etc.
Active Publication Date: 2018-11-30
CHINA COAL XINJI ENERGY CO LTD
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Problems solved by technology
However, the scaffolding support has problems such as high construction strength, low safety factor, and high material cost; at the same time, the scaffolding support is a passive support, and the support effect is poor
When the roof coal support is supported by anchor nets and cables, it is easy to cause roof leaks and slabs, resulting in poor roadway formation and difficult to meet the requirements for support strength
Method used
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Embodiment Construction
[0017] Hereinafter, the present invention will be further explained through the description of the embodiments in conjunction with the drawings:
[0018] Such as Figure 1 to 4 As shown, a supporting device for supporting a top coal rock mass of the present invention includes an anchor 1, an anchor net 1 is laid along the coal mine roadway, a supporting iron sheet 2 is provided between the anchor net 1 and the coal rock mass, and the supporting iron sheet 2 The surface is in contact with the roof installed on the coal and rock mass, the supporting iron sheet 2 is provided with rectangular holes 3, and the anchor rod 4 and one end of the anchor cable 5 are installed on the anchor net 1 along the radial direction of the roadway section. The other end of the cable 5 passes through the hole 3 of the supporting iron sheet 2 and extends into the coal rock body. Two inclined downward bolts 4 are provided at the bottom of both sides of the roadway, and the included angle with the horizon...
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The invention discloses a support top coal rock mass support device and a construction method thereof. The device comprises an anchor net; the anchor net is paved along a coal mine tunnel; support iron sheets are arranged between the anchor net and a coal rock mass; the surfaces of the support iron sheets are contacted with a top plate mounted on the coal rock mass; holes are formed in the support iron sheets; one ends of anchor rods and anchor ropes are mounted on the anchor net in the radial direction of the section of the tunnel; the other ends of the anchor rods and the anchor ropes penetrate through the holes of the support iron sheets, and extend into the coal rock mass; and in the support top coal construction of the tunnel, the application range of an anchor net rope support is largely widened, the advantages of the anchor net rope support are fully exerted, the construction intensity is low, the cost is low, the safety is high, the active support is realized, and the support effect is excellent.
Description
Technical field [0001] The invention relates to a coal mine roadway support technology, in particular to a construction method of a top coal rock mass support device. Background technique [0002] At present, the well-known roof support coal construction technology adopts shed support, and very few adopt the anchor net and cable support technology. However, the shed support has problems such as high construction strength, low safety factor, and high material cost; at the same time, the shed support is passive support and the support effect is poor. When the top coal construction adopts the anchor-net-cable support, it is easy to produce roof leakage and slabs, resulting in poor roadway formation and difficulty in supporting the strength to meet the requirements. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a construction method of a roof coal rock body support device, the support formed by the method can improve the s...
Claims
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IPC IPC(8): E21D11/15E21D20/00
CPCE21D11/006E21D11/152E21D11/155E21D20/00
Inventor 魏标孟献鹤姜雪兵
Owner CHINA COAL XINJI ENERGY CO LTD