分段“Z”型留巷和跳压反采过断层在百善矿的实践

摘要

There are two ways of crossing faults in blasting face:one is horizontal advance and forced cross by ripping and floor damage in low -drop fault and another is direct finishing after stoping to the fault ,resettling working face at step-pressure cut laid in advance and stoping forward passing through fault .Aiming at the dis‐advantages of the two above-mentioned methods ,the author present the method of crossing fault by Z -type retaining roadway and step-pressure stoping ,which has been put into use at working face of 68 -Nanyi coal pillar with great economic benefits .%炮采工作面过断层大致有两种方法：一是断层落差较小时进行平推硬过，即是采取挑顶破底，平推硬过；二是断层落差较大时进行跳压回采，即是提前做好跳压切眼，回采至断层处后直接收作，在跳压切眼重新安装工作面，跳过断层继续向前回采。上述两种方法都存在一定的弊端，现提出分段“Z”型留巷和跳压反采的回采方式，对该方式进行了系统分析，投入到68南翼煤柱工作面中应用，并取得了明显的经济效益。