卸压孔技术在“三软”煤层巷道掘进中的应用

Application of Borehole Pressure Relief Technology in Three-soft-coal-seam Roadway Driving

为了避免"三软"煤层掘进过程中出现煤炮现象,根据巷道破坏机理及卸压原理分析,探讨了采用卸压孔技术在"三软"巷道掘进迎头的应用,实现了明显改善巷道施工安全,提高巷道成型效果及经济效益的目的。

To avoid coal burst in driving roadway with three-soft coal seam ,the authors present the application of borehole pressure relief technology by analysis of the roadway failure mechanism and pressure relief principle , which has obviously improved the roadway construction safety ,the shaping effects and the economic benefits .