切顶卸压护巷技术研究与应用

Research and Application of Cut Top Relief Support Roadway Technology

针对近距离煤层群集中运煤上山将受多个回采工作面影响、巷道变形量大和维护困难的现状,白皎煤矿采用了切顶卸压护巷技术对该巷进行保护。研究表明:采用工作面切顶卸压技术,切断了采空区悬臂梁与工作面前部煤体之间应力的传递,使采空区提前形成了稳定结构,从而实现了工作面卸压和护巷的目的。

Aiming at the coal seam cluster mountain will be subject to a plurality of working face, the deformation of the tunnel effect of large quantity and difficult to maintain the status quo in close range,Baijiao coal mine adopts cutting top relief roadway technology to protect the roadway. Research shows that the top unloading technology by means of face cut, cut off the transmission between the mined out area cantilever beam and front work department stress of coal, the mined out area formed a stable structure in advance, thus realizes the work pressure relief and roadway purpose.