Timbering and pressure relief structure and method for rock burst tunnel

Abstract

The invention relates to the technical field of mining, in particular to a timbering and pressure relief structure and method for a rock burst tunnel. The timbering and pressure relief structure comprises a timbering structure and a pressure relief structure, wherein the timbering structure comprises an anchor rod and an anchor cable; the anchor rod is inserted in surrounding rock from the inner wall of the rock burst tunnel; the anchor cable is inserted in the surrounding rock from the inner wall of the rock burst tunnel; the anchor rod and the anchor cable are alternately arranged at intervals; the pressure relief structure comprises a pressure relief drilled hole and a detonating piece; the pressure relief drilled hole is formed in the surrounding rock from the inner wall of the rock burst tunnel; and the detonating piece is positioned at the tail end of the pressure relief drilled hole. An anchor rod timbering body is formed in the surrounding rock of the rock burst tunnel in an erection manner, when rock burst occurs, the anchor rod timbering body and the anchor cable timbering body jointly form a composite anti-impact body, under the effect of impact load of the rock burst, the anchor rod and the anchor cable cooperatively absorb energy to relieve impact, energy generated by the rock burst can be absorbed effectively, impact damage to the tunnel by the rock burst is prevented, and the anti-impact performance of the rock burst tunnel is improved.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a support and pressure relief structure and method for a rock burst roadway. Background technique [0002] With the gradual development of my country's coal resources, the mining depth of coal resources has gradually developed from shallow to deep. The mining of deep coal resources is often accompanied by coal and rock dynamic disasters such as rock bursts, rock bursts, and coal and gas outbursts, which seriously threaten the mine's safety. Safe Production. At present, rock burst roadways mainly adopt ordinary anchor rods, U-shaped steel, O-shaped sheds and other support methods. These support methods are prone to overall instability and damage under the action of rock burst, and cannot effectively control the deformation and failure of rock burst roadways. . Contents of the invention [0003] (1) Technical problems to be solved [0004] The technical problem to be solved by t...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the existing rock burst roadway support is prone to overall instability and damage under the action of rock burst, and cannot effectively control the deformation and damage of the rock burst roadway

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