Mechanics Model of the Surrounding rock Structure under condition of the unStable Roadway Walls

摘要：

Based on the loading characteristic of the roadway surrounding rock, the mechanics model of the rectangle roadway under condition of unstable roadway walls is found. Using the theory of material mechanics, the paper has answered the location and the magnitude of the maximal shear stress and maximal tense stress in the roadway roof rock beam, which can estimate whether the roadway roof is destroyed. Therefore, the thickness of the first immediate roof keeping the stability of the roadway roof is drawn out. Also, the paper has drawn out the relationship between the width of the roadway and the thickness of the key roof. It provide the theory basis for the choice of the roadway roof supping form under condition of the unstable roadway walls.

关键词： unstable roadway walls maximal tense stress beam-arc structure key roof

作者: GAO Jinhai HUANG Xiaoguang WANG daun

作者单位: School of Energy science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454003 China

会议类型: 国际会议

会议名称: 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)

会议地点: 河南焦作

会议语种:英文

页码: 593-598

在线出版日期: 2007-04-17（万方平台首次上网日期，不代表论文的发表时间）