关键词: 微震, 冲击地压, 微震能量, 回采速度

Abstract: Based on the engineering background that the 4上coal seam of Dafosi Coal Mine is used as the protective layer of 4 coal seam for mining，in order to explore the law of induced burst of working face in this special area，the relationship between mining speed and microseismic 'time-space-strength' character⁃ istic parameters is analyzed by means of existing microseismic monitoring equipment. The results show that the mining of the 4上coal seam as the protective layer of the 4 coal seam can effectively reduce the micro⁃ seismic energy of the working face，and the scheme has played a better pressure relief role.Through the cor⁃ relation between microseismic spatial distribution characteristics and mining speed，the reasonable mining speed is determined，which provides data support for the design of rockburst prevention system.

Key words: microseism, rockburst, microseismic energy, mining speed