摘要
针对凤岗隧洞V类围岩进行了三维非线性仿真模拟,提出了软岩洞室开挖产生空腔效应和损伤弱化效应,建立用塑性区参数弱化的方法拟合收敛变形取得了较好的效果。还讨论了空间效应、加固效应以及施工优化方案,论证了隧洞的稳定性。
In light of the surrounding rock mass of class V of Fenggang tunnel, a three-dimensional nonlinear simulation for it has been carried out. The cavity effect and the damage softening effect induced by excavating the tunnel in soft rock mass, have been presented. And the fitting of convergent deformation is effectively established by using the parameters softening method for plastic zone. Finally, the space effect, reinforcing effect as well as the optimizing construction scheme are also discussed; and the stability of the tunnel is demonstrated too.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2002年第6期673-677,共5页
Rock and Soil Mechanics
基金
广东省东江— — 深圳供水改造工程建设总指挥部的资助
关键词
隧洞
三维非线性
仿真计算
Computer simulation
Deformation
Rocks
Three dimensional
