Effect of anchor-injected support of the dip heads adjacent rock stability based on the distinct element
Due to the direct roof structured by sandy mudstone and the direct floor structured by carbon mudstone in three closed slant roadways in one coal mine, the intensity of direct roof and floor is poor which is acted as the extreme instable steam. The extreme instable steam has brought heavy effects on safe construction and normal utilization in roadway. Mechanism of the bolting and bolt-grouting support wall-rock has been analyzed further by the distinct element method. Comparing bolting support with bolt-grouting support by numerical simulation UDEC, all mechanical, displacement and damage character of the wall-rock have been put forward. In the end, the influence of stability on the slant wall-rock from bolting support and bolt-grouting reinforcement has been indicated. The article utilizes the discrete element method conferring adjacent rock action mechanism of the bolting and anchor-injected support, and proceeds numerical simulation to this two types of support method by using the discrete element software UDEC, and then deeply researches mechanical character, displacement character, and damage character of the dip heads adjacent rock after the bolting and anchor-injected reinforcement, after that it analyses the effect of bolting and anchor-injected support stability of influence the dip heads adjacent rock with the constrating method, thus it provides a reference basis for suitable support of the dip heads adjacent rock.
LIU Shao-wei DONG Shi-ju ZHENG Xin-wang ZHANG Wei-guang
School of Energy Science and Engineering ,Henan Polytechnic University ,Jiaozuo,china
国际会议
International Mining Forum 2010(2010年国际采矿论坛 IMF 2010)
合肥
英文
149-154
2010-09-20（万方平台首次上网日期，不代表论文的发表时间）