关键词: 深井, 高瓦斯煤层, 大巷揭煤, 区域防突

Abstract: In this paper, based on the practical problems of field engineering, the regional outburst prevention technology and application research are carried out for the deep high gas coal seam roadway uncovering problem. Firstly, boreholes are drilled in front of the roadway to detect the occurrence of coal and rock mass in front of the roadway. Secondly, the outburst danger of coal body is predicted by monitoring gas pressure, gas content and coal strength. The coal body in front of the roadway is determined to be outburst coal body. The regional outburst prevention technology of combined surface-underground coal washing is put forward, which is used for track roadway and return air, respectively. The outburst elimination of roadway was carried out, and the effect of regional outburst elimination was tested. Finally, the roadway coal uncovering was successfully implemented. In this paper, the combined surface and underground coal washing regional outburst prevention technology effectively prevents the occurrence of coal and gas outburst, provides a research basis for similar engineering problems, and has high social benefits and application value.