Treatment Research on Dynamic Disaster Caused by Hard Roof Multi-seam Mining

Taking Fuli Coal Mine 62184 working face in Hegang mining area as the background, we carried out dynamic disasters control technology research for hard roof multi-layer mining (mine earthquake and rock burst induced by mine earthquake). By the analysis of several rock-burst reasons in hard roof multi-layer mining, according to the micro seismic monitoring data, we determine the hard seam that has main influence on rock burst danger, and propose comprehensive control measures of rock burst from four aspects: reducing static load, weakening dynamic load, enhancing anti-rock burst ability, perfecting monitoring system. The measures established by the research results ensured the safety of 62184 working face.