巷道全断面抗剪锚管索支护技术研究

Study on Support Technology of Full Section Shearing Resistance Anchor Pipe and Cable in Roadway

以里必煤矿进风立井井底车场2号巷道为研究对象,结合矿井埋藏深的特点,对巷道变形特征和维护原则进行了分析,提出全断面抗剪锚管索支护技术优化方案。观测结果表明:2号巷道顶板及两帮最大位移量较小,巷道围岩稳定性较好,满足开采安全要求。

Taking the No.2 roadway in the bottom yard of the air intake shaft of Libi Coal Mine as the research object,combined with the characteristics of the buried depth of the mine,the deformation characteristics and maintenance principles of the roadway are analyzed,and the optimization scheme of full section shearing resistance anchor pipe and cable support technology is put forward.The observation results show that the maximum displacement of the roof and two sides of the No.2 roadway is small,and the surrounding rock stability of the roadway is good,which meets the requirements of mining safety.