摘要
Abstract
In view of the problems of large deformation amount of surrounding rock,high roadway repair rate and others in the stoping roadway,taking the 3301 working face lower crossheading of Shiqiao Coal Mine as an engineering example,by conducting technical feasibility analysis on the high-strength anchor mesh cable support way,the rationality of the design support scheme is demonstrated by using means of suspension theory,natural equilibrium arch theory,and elastic-plastic deformation support strength theory calculation,etc,and on-site drilling peeping test,drawing force test,and torque force test are adopted for verification.The results show that the use of high-strength pre-stress anchor rods combined with long and short anchor cables"gradient support"technology can effectively control the deformation of surrounding rock,and the overall integrity of roadway support is relatively good,meeting the requirements for the use of stoping roadways.关键词
采煤/巷道/支护/设计Key words
coal mining/roadway/support/design分类
矿山工程
