突出煤层区域预抽及短导硐揭煤技术

Regional Pre-pumping and Short Pilot Tunnel Uncovering Coal Technology in Coal Seam with Outburst Danger

石门揭煤是由岩巷开拓进入采煤作业的关键工序,其中尤以突出煤层石门揭煤过程最为复杂。焦煤公司冯营矿紧密结合现场生产实际,采取交叉钻孔卸压抽采及石门短导硐法揭煤工艺,安全快速地揭开突出煤层,取得了显著的安全效果。

The crosscut is the key process of rock roadway expanding into the coal mining operations, and it is more difficult to uncover coal in crosscut of outburst coal seam. By using the comprehensive method such as combining pressure relief with cross borehole and short pilot tunnel uncovering coal technology in crosscut, outburst coal seam has been uncovered safely and speedily, and it has achieved remarkable safety effects.