下分层回采巷道的全锚索支护技术研究

Research on Full Anchor Cable Support Technology for Lower Layering Mining Roadway

为了改善长平煤矿下分层回采巷道的支护形式,提高支护效果,降低支护成本,提出了锚索梁+金属网支护方式。通过现场观测、理论计算和数值模拟的方法确定了锚索的直径、长度、间排距,应用到现场,巷道变形量满足安全要求,证明了下分层回采巷道在顶板胶结较好时,可以采用锚索梁+金属网支护,可为同等条件下工程提供借鉴和参考。

In order to improve the support form of the lower layering mining roadway in Changping Coal Mine,improve the support effect,and reduce the support cost,an anchor cable beam+metal mesh support method is proposed.The diameter,length,and spacing between rows of the anchor cable are determined through on-site observation,theoretical calculation,and numerical simulation.When applies to the site,the deformation amount of the roadway meets safety requirements,which proves that when the roof cementation of the lower layering mining roadway is good,anchor cable beam+metal mesh support can be used,which can provide references for engineering under the same conditions.