Analysis of Grouted Mesh-Shell-Bolts Support Stress in Soft Rock Tunnel by Field Measurement
The support of roadway within soft rock is always a difficult problem in coal mining. In Guhanshan Mine, the engineering geological conditions of supporting rock of the west main roadway is worse, the roadway was seriously deformed and destroyed, and it is difficult to support using routine method, so the grouted mesh-shell-bolt support is employed to solve this problem. In order to reveal the support stress condition and deformation law of the support and evaluate the support effect, under the function of ground stress and tectonic stress, the stress distribution of the main chord pole and the inner bone tendon and the coupling stress between support and surrounding rock, were measured in situ. The internal force distribution and its variation law of the support were analyzed, the results indicate that under bias loading and high tectonic stress, the mesh-shell support could keep good functional mode and the deformation and destruction of roadway surrounding rock under complex geological conditions could be controlled effectively.
roadway within soft rock grouted mesh-shell-bolt support pressures in surrounding rock
LIU Bao-min LI Huai-zhen ZHANG He
Institute of Resources ＆ Environment, Henan Polytechnic University, Jiaozuo 454003, Henan, China Guhanshan Mine, Institute of Jiaozuo Coal Mine Group Corporation,Jiaozuo 454002, Henan, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
702-706
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）