Method for preventing and controlling bottom heaving disaster of mine stoping tunnel

Abstract

The invention discloses a method for preventing and controlling a bottom heaving disaster of a mine stoping tunnel. The method comprises the following steps: 1) digging a stoping tunnel; 2) confirming a mechanical parameter of a surrounding rock substrate; 3) confirming a supporting scheme for the stoping tunnel: respectively confirming supporting structures adopted by a top plate supporting system, a tunnel side part supporting system and a base plate supporting system, wherein the supporting structure is confirmed by adopting the top plate supporting system according to a conventional confirming method for a tunnel top plate supporting scheme, the supporting structure is confirmed by adopting the tunnel side part supporting system according to the width of a coal side breaking area, andthe supporting structure is confirmed by adopting the base plate supporting system according to the maximum breaking depth of the tunnel base plate and the horizontal distance from the maximum breaking depth of the tunnel base plate to a side wall of an adjacent tunnel; and 4) constructing the supporters of surrounding rocks of the stoping tunnel. The method provided by the invention is simple insteps, is conveniently realized, is low in invested cost and is good in use effect. The bottom heaving problem of the mine stoping tunnel under a complex condition is solved. The repairing operation of the stoping tunnel is avoided and the construction cost is low.

Description

technical field [0001] The invention belongs to the technical field of mine backing roadway bottom plate support, and in particular relates to a method for preventing and controlling a mine backing roadway floor disaster. Background technique [0002] With the gradual depletion of shallow mineral resources, the development and utilization of deep mineral resources has become an inevitable trend of energy development worldwide. Mining roadways generally exist in complex geological environments with high ground stress, high ground temperature and high pore water pressure. The stress increases sharply and the structural stress is significant. The surrounding rock of the deep mining roadway generally shows hard rock softening, strong expansion and significant rheological aging characteristics. The ratio of 70% seriously affects the normal use of the mining roadway, and even leads to the instability and scrapping of the entire mining roadway. For this reason, for a long time, pe...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preventing and controlling the bottom disaster of mining roadway in view of the above-mentioned deficiencies in the prior art. The bottom of the mining roadway in the lower coal mine is avoided, and the repair work of the mining roadway is avoided, and the construction cost is low

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