Abstract:
The rock burst of No. 6305 coal mining face is remarkable in Tangkou Coal Mine, because of the strong burst trend coal and weak burst trend roof and floor. Based on comprehensive analysis of geological factors, dangerous assessments were got. The assessments indicate that there are two severe, and two moderate dangerous zones in every roadway, which are in line with actual observed rock burst situations. In order to determine the risk degree of rock burst, the methods including stress monitoring system, micro-seismic monitoring system, and method of drilling index were taken, meanwhile the dangerous zones were monitored mainly. Aiming at that, the corresponding preventive measures were put forward. The research results show that it can effectively reduce the danger of the rock burst occurred that using blasting method and large diameter borehole pressure relief method step by step.