关键词: 冲击地压, 微震, 断层, 不规则煤柱

Abstract: Based on the mining conditions of 183下05 working face in Jisan Coal Mine of Yanzhou Coal Industry Co.，Ltd.，considering the influence of irregular coal pillars and fault coal pillars left over from the overlying goaf，the microseismic activity law in the mining process of the working face is ana⁃ lyzed，and the coupling relationship between the stress of the working face and the distribution of coal pil⁃ lars in different mining periods is inverted and calculated，so as to explore the mechanism of coal body im⁃ pact instability and make targeted prevention and control. The results show that large energy microseismic events are prone to occur in the areas of residual coal pillar，roadway cutting and fault influence in the 3上 coal seam. There are obvious stress concentration and high stress gradient in the coal pillar and fault area. Through the implementation of large diameter drilling and blasting roof breaking and other prevention mea⁃ sures can better eliminate the risk of rock burst in working face. The research provides theoretical and tech⁃ nical support for coal seam mining under the same conditions.

Key words: rockburst, microseism, fault, irregular coal pillar