摘要
本文以曙光煤矿1228工作面大埋深高应力回采巷道为研究对象,对巷道围岩地质力学参数进行了评估,分析出巷道原有支护方案存锚杆锚索同排布置、锚杆锚索预紧力小及托盘形状及承载能力不足的问题,因而导致了巷道围岩的大变形,基于此提出了改进支护方案,工业性试验结果表明,该方案可有效控制巷道围岩变形,效果良好。
this article in shuguang coal mine 1228 face big buried deep high stress roadway,as the research object,the parameters of the roadway surrounding rock geological mechanics evaluation,analysis of the original support scheme of roadway deposit with anchor bars and row layout,small pre-tightening force of anchor bars and shape of the tray and the problem of insufficient bearing capacity,and thus lead to the large deformation of surrounding rock of roadway,the supporting plan,based on the proposed to improve the industrial test results show that the scheme can effectively control the deformation of roadway surrounding rock,the effect is good.
作者
史智元
SHI Zhiyuan(Coal Mining Branch,China Coal Research Institute,Beijing 100013,China;Coal Mining and Design Department,Tiandi Science and Technology Co.,Ltd.,Beijing 100013,China)
出处
《煤矿现代化》
2020年第5期8-11,共4页
Coal Mine Modernization
关键词
大埋深
高应力
回采巷道
支护
large buried depth
high stress
mining roadway
support
