摘要
采用弹塑性二维有限元法,以西北某市水利地下工程泄洪洞为例,对低地应力区洞室围岩开挖后拱顶拉应力进行了数值模拟研究,并总结分析了低地应力区地下洞室围岩开挖后拱顶拉应力及其分布特征。该项工作的实施,将有利于进一步研究低地应力区洞室围岩稳定性与围岩变形破坏机理,它将对保障地下工程的圆满进行具有极为重要的理论价值和现实意义。
The roof rockmass tensile stress of underground excavation in the low ground stress regions is simulated by two-dimension elastico-plastic finite element method(FEM). The tensile stress and its characteristics are summarized. The progress made will have great significance for further study of underground excavation surrounding rockmass stability and its mechanism, meanwhile it will play a very important role in an underground engineering project.
出处
《西安科技大学学报》
CAS
北大核心
2005年第1期5-8,共4页
Journal of Xi’an University of Science and Technology
基金
中国博士后科学基金资助项目(2003034123)
