Safety Analysis for Bonding Interface Between Bolt and Rock
In bolted rock engineering, the bonded interface separation between bolt and rock mass often leads to roof fall in the bolt supporting roadway in coal mine, because of shear stress concentration . Based on the Mindlins model, the stress distribution function on the interface have been deduced. It is shown, as the increasing of elastic modulus of rock, the shear stress concentrating zone would move toward the out end of bolt. Moreover, the software of ANSYS has been used for simulating the shear stress distribution along interface, it is shown the shear stress distribution along longitudinal direction is asymmetry, i.e., the shear stress near out end of bolt is very large, but it decreases rapidly far away the out end. Shear stress distribution on the interface has also been affected by Youngs modulus E and Possions ratio . It is valuable for research the bolt reinforcing mechanism as well as reinforcing safety reliability of roadway.
bolt reinforcement bonded interface shear stress roadway
TAN Yunliang ZHANG Lijun YANG Huiming ZHANG Yuming
Resources & Environmental school , Shandong University of Science & Technology, Qingdao, 266510,Chin Resources & Environmental school , Shandong University of Science & Technology, Qingdao, 266510,Chin
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
635-639
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）