回采巷道软岩支护现状分析与对策

Current Situation Analysis and Countermeasures of Soft Rock Support in Stoping Roadways

为解决清水营煤矿软岩治理难题,实现采掘接续正常,通过分析支护存在的主要问题,提出“强帮、固顶、治底”的全封闭承压环软岩治理方向,采用“全断面高强预应力锚索基本支护+锚索桁架加强支护+喷浆封闭+全长锚固+反底拱治理底鼓”的复合支护方式施工,提高了单进水平,实现支护安全,为相似围岩条件的软岩巷道控制提供借鉴。

In order to solve the difficult problem of soft rock governance in Qingshuiying Coal Mine and achieve normal mining and excavation continuity,by analyzing the main problems existing in support,a fully enclosed pressure bearing ring soft rock governance direction of"strong support,top fixation,and floor governance"is proposed.The composite support way of"basic support of high-strength pres-tressed anchor cables with full cross-section+strengthened support of anchor cable truss+shotcrete enclosed+full length anchoring+reverse bottom arch governance of bottom bulge"is adopted for construction,which improves the single entry level and achieves support safety,provide reference for the control of soft rock roadways with similar surrounding rock conditions.