Three-dimensional Numeral Analysis on the Stability of Surrounding Rock in Large Section Underground Chamber Construction
The underground chamber construction destroys the original stress balance，the original three-dimensional stress state is changed into two-dimensional stress state, so the surrounding rock will be destroyed by plastic deformation under the action of secondary stress. Because of underground chamber section being large the way of construction has a great action on its deformity and stability of surrounding rock. In this paper, the three-dimensional mechanics model of four kinds of dynamic construction procedures were found, and the three-dimensional elasto-plasticity finite element simulation on chamber construction carried out, and the evolution process and features of plastic section were analyzed. The conclusion is that full-face construction is better than the other three modes. The results can provide basis to chamber construction and support design.
underground chamber plastic failure three-dimensional elasto-plasticity finite element numeral analysis.
XIONG Deguo JIANG Yongdong ZENG Qiang XIAN Xuefu
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454030, Henna, China The Key Laboratory of the Exploitation of Southwest Resources & the Environmental Disaster Control E
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
754-759
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）