Comprehensive protection method for coal mine rock burst

Abstract

The invention relates to a comprehensive protection method for coal mine rock burst, which can effectively solve the problems of comprehensive protection of the coal mine rock burst and guarantee of production safety. The comprehensive protection method comprises the following steps of: supporting a roadway, digging a roadway side pressure relief hole and a front pressure relief hole, forming a pressure relief zone for protection in a pressure relief tunneling circulation mode, injecting water into a coal seam, and breaking the bottom for pressure relief; when the coal-containing gangue interbed thickness d of the roadway bottom coal is smaller than or equal to 1.5 m, forming bottom plate pressure relief holes in the two side corners of the roadway, and finally enabling the drilled holes to be subjected to water injection softening; when the coal-containing gangue interbed thickness d of the bottom coal of the roadway is more than 1.5 m and less than or equal to 4m, inserting pipes into holes which are not blasted and injecting water into the holes; when the coal-containing gangue interbed thickness of the bottom coal of the roadway is larger than 4 m, drilling bottom plate blast holes along the cross section of the roadway every 20 m except that bottom holes are broken at the bottom corners of the roadway sides; and when the roadway passes through the layer and enters the coal seam from the top plate, performing bottom plate pressure relief from a roadway bottom plate and rock pillars between the coal seams. The method is easy to operate, low in cost and high in working efficiency, coal mine rock burst protection can be effectively achieved, and safe production is guaranteed.

Description

technical field [0001] The invention relates to a coal mine disaster prevention method, in particular to a comprehensive protection method for coal mine rock burst. Background technique [0002] With the gradual deepening of coal mine mining and the continuous increase of mining intensity, the threat of rock burst to safe production has become increasingly significant. However, the current prevention and control technology of rock burst is still immature, and it is difficult to accurately predict and forecast. After taking control measures, it still cannot prevent the occurrence of rock burst, causing hidden dangers for safe production. For this reason, taking necessary comprehensive protection measures to prevent and reduce the personal injury caused by rock burst is an important part of the comprehensive management technology of rock burst disasters, but there is no public report on how to achieve comprehensive protection. Contents of the invention [0003] In view of t...

AI Technical Summary

Problems solved by technology

However, the current prevention and control technology of rock burst is still immature, and it is difficult to accurately predict and forecast. After taking control measures, it still cannot prevent the occurrence of rock burst, causing hidden dangers for safe production

For this reason, taking necessary comprehensive protection measures to prevent and reduce the personal injury caused by rock burst disasters to operators is an important part of the comprehensive management technology of rock burst disasters, but how to achieve comprehensive protection has not been publicly reported.