Rock Burst Prevention Research on Island Region Partial Mining of Coal Seam with High Burst Tendency

In the island region of both sides mined, the stress concentration is relatively high in coal seam. When the seam has a strong rock burst tendency, mining activities in the region may cause the rock burst accidents. Combined with the situation of 302 working face in Tangkou Coal Mine, the rock-burst factors and hazardous areas were analyzed, then the monitoring and control programs were formulated for the face. In the mining process, the method of pre-relief was used in the region of hazardous areas. In the same time, the new hazardous site was early warned by the monitoring system for the rock bust. Then the prevention and control measures were carried out in the hazardous areas. Above all, after pressure relief, dynamic appeared events were reduced in 302 working face, and the coal mining was safe in the island region.