An Analytical Study on the Rock Burst of the Heading Face of the Sublevel Caving of Steep Vertical Coal Seam

Based on the occurrence of high rock pressure in Dahonggou mine in the recent two years,through demonstration the high rock pressure has been identified as rock burst.According to the characteristics of the allocation of mining faces on the horizontal sublevel of Dahonggou coal mine's steep vertical coal seam,this essay conducts a study on the mechanism of rock burst occurrence and the measures for its prevention,by analyzing the current status,conditions,environment and characteristics of the rock burst occurring on the mining face.It reaches a conclusion that Dahonggou mine's rock burst is the result of horizontal stress,vertical stress and the top mining-induced stress.It can be effectively prevented by a variety of methods such as relieving shot on the roof and floor,coal seam infusion,floor relieving slotting,recovery prevention and cross-heading.