摘要
从锚杆锚固段剪应力分布状态出发,分析了不同锚固方式情况下锚杆预紧力的作用效果.研究了不同时期顺槽巷道以及巷道不同深度围岩的不协调变形的发展变化情况,从锚杆受力是由于围岩不协调变形而引起的基本观点出发,对不同锚固方式锚杆的工作机理进行了分析和探讨.其结论是由于在巷道的服务期内,围岩的不协调变形不会停止,所以锚杆的工况一直在变化当中.图4,参10.
Based on the sheer stress distribution along cemented part, the effort caused by initial anchorage force was discussed. The development of the roadway deformation in different stage and between different depths was studied. Based on the principle of bolt resistance changing with the uncoordinated deformation of surrounding rock, the work mechanism of bolts was analyzed. It was put forward that the working performance is changing continually because the roadway deformation cant stop in its service time. 4figs. ,10refs.
出处
《湘潭矿业学院学报》
2003年第4期15-17,共3页
Journal of Xiangtan Mining Institute
基金
国家自然科学基金重点资助项目(编号:59734090)
关键词
顺槽巷道
锚杆
预紧力
不协调变形
工作机理
roadway
bolt
initial anchorage force
deformation
work mechanism
