Supporting method of large-section tunnel in water-rich complicated geological mass

A roadway support and complex technology, applied in drainage, tunnel, tunnel lining and other directions, can solve problems such as the inability to solve the problem of large-section roadway support in water-rich complex geological bodies, and achieve the improvement of production technology level and huge social benefits. , the effect of reducing economic and resource losses

Inactive Publication Date: 2012-12-05
DATONG COAL MINE GRP
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Problems solved by technology

[0004] In order to solve the problem that general support methods cannot solve the problem of supporting large-section roadways in water-rich and complex geological bodies, the present invention provides a method for supporting large-section roadways in water-rich and complex geological bodies

Method used

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  • Supporting method of large-section tunnel in water-rich complicated geological mass

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Embodiment Construction

[0010] The roadway support method for large-section roadways in water-rich complex geological bodies, the roadway width is 5900mm, and the top of the roadway is a micro-arc arched roof 2, wherein the height difference a between the highest point of the micro-arc arched roof 2 and the highest point of the side wall of the roadway is 1200mm, The bottom of the roadway is a reverse arched bottom plate 5, wherein the height difference b between the lowest point of the reverse arched bottom plate 5 and the lowest point of the side wall of the roadway is 800mm, and the combination of anchor rods and anchor cables is used for support. A number of anchor rods 4 are evenly distributed, and the length of the anchor rods 4 on the micro-arc arched roof 2 is 2800mm, the diameter is 20mm, and the row spacing is 800×800mm. The cable 3 and the anchor cable 3 have a length of 7000mm, a diameter of 20mm, and a row spacing of 2000×2000mm; a number of anchor rods 4 are evenly distributed on the sid...

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Abstract

The invention particularly provides a supporting method of a large-section tunnel in water-rich complicated geological mass and solves the problem that supporting of the large-section tunnel in the water-rich complicated geological mass fails to be achieved by the common supporting methods. The supporting method includes: arranging a micro-arc arched roof and an inverted-camber floor in the tunnel, and using anchor ropes and anchor bolts for combined supporting. The supporting problem of the large-section tunnel with rich-water roof and rheological property, expansibility and softness is solved, surrounding rock is controlled effectively, loss caused by instability of the tunnel is avoided, coal resources are exploited effectively, production technological level of enterprises is increased, and huge social and economic benefits are achieved.

Description

technical field [0001] The invention relates to a support method for an underground roadway in a coal mine, in particular to a large-section roadway support method for water-rich complex geological bodies. Background technique [0002] The stability of the surrounding rock of the roadway is the result of the joint action of the surrounding rock and the supporting body. The surrounding rock itself is the supporting structure or an inseparable and important part of the supporting structure. When the surrounding rock has sufficient supporting capacity, the surrounding rock is in a self-stable state, and it is also a stable structure without support; only when the self-stabilizing ability of the surrounding rock is insufficient, it is necessary to provide certain support to compensate for the self-stabilizing ability of the surrounding rock Insufficient parts make it a stable structure. The support of coal mine roadway has gone through a long process of wooden shed support, mas...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D21/00E21F16/00E21D11/10
Inventor 冯月新李云江郭万忠南培珠陈旭忠李建军张学峰蔡志炯樊靖杨发长崔明奎
Owner DATONG COAL MINE GRP
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