三维流固耦合数值模拟在铜锣山隧道安全性评价中的应用

隧道施工破坏了原有的岩体平衡，可能引发塌方、突水等安全问题，为了评估隧道建设的安全性，基于三维稳定渗流问题的基本控制方程，对铜锣山隧道全线的开挖和支护方案进行了三维流固耦合模拟，在应力、应变、渗流分析的基础上，评估了隧道建设发生岩爆、坍塌、突水灾害的风险，预测了可能出现大变形和突水灾害的工段，对于隧道安全建设具有指导意义。

The application of 3D fluid-solid coupling numerical simulation in the safety accessment of Tong-Luo Shan tunnel

Tunnelling may disturb the intrinsic balance of the stratum, and result in accidents like caving or gushing. In order to access the security of the Tong-Luo Shan tunnel project, 3D fluid-solid coupling numerical simulation, based on the basic control equation of 3 D steady flow, was used to calculate the stress, strain and flow vector, according to the design of excavation and support of the whole tunnel. The result shows the risk level of rockburst, caving and gushing of the tunnel construction, and some areas with large distortion or gushing disaster were forecasted, thus may be significative for the safety of the project.