Comprehensive Prevention and Control Technology of Mine Pressure Bumping from Coal Pillar Region Under Surface Railway Line

Abstract：In order to effectively control the mine pressure bumping danger occurred from the coal pillars under the railway line at the surface ground,the mine pressure bumping tendency from No.5 seam in Tangshan Mine was analyzed,the mechanism of the mine pressure bumping occurred under the special geological conditions of the mine was obtained and a dynamic prevention and control technology system of the mine pressure bumping integrated with ＂the mining design with avoiding mine pressure bumping,the mine pressure releasing before the mining to prevent the mine pressure bumping,the prediction and pre-warning during the mining period and the comprehensive prevention and control＂ was provided.During the implementation process,the layout and support design ould pre-consider the mine pressure bumping prevention effect.During the seam gateway driving period,the drilling cutting method would be applied to set up the key prevention and control location and then the water pre-injection in seam,in seam blasting and pressure releasing and other measures would be applied to weak the seam.During the mining period,the drilling cuttings method in advance of 10~50 m was applied to the dynamic evaluation on the mine pressure bumping danger degree which could guide to conduct a pressure releasing blasting on time.The practices showed that the comprehensive mine pressure bumping prevention measures could be effective to reduce the mine pressure bumping danger to ensure the safety and efficient mining of the coal face.