摘要
以某矿8714工作面为工程实例背景,分析该工作面中采用切顶卸压沿空留巷方案对2714巷围岩稳定性的影响,并通过有限元软件模拟对比分析了在不同切顶层高度及切顶角度的施工方案中,分别对2714巷围岩稳定性的影响程度。结合现场分析得出了工作面在采用切顶卸压沿空留巷施工方案能有效提高巷道围岩的稳定性,且在一定范围内,巷道围岩稳定性随切顶层高度增高而增大。
Taking 8714 working face of a mine as an engineering example,analyzes the influence of the scheme of roof cutting and pressure relief retaining roadway along the goaf on the surrounding rock stability of 2714 roadway,and compares and analyzes the influence degree of the surrounding rock stability of 2714 roadway in the construction schemes with different roof cutting height and roof cutting angle through finite element software simulation.It is concluded that the construction scheme of retaining roadway along goaf with roof cutting and pressure relief can effectively improve the stability of roadway surrounding rock,and in a certain range,the stability of roadway surrounding rock increases with the increase of the height of cutting top layer.
作者
赵小兵
ZHAO Xiaobing(Jinneng Holding Group,Datong 037010,China)
出处
《煤炭技术》
CAS
北大核心
2022年第4期59-62,共4页
Coal Technology
关键词
切顶卸压
位移量
切顶层高度
稳定性
top cutting and pressure relief
displacement
top cutting height
stability
