基于流固耦合理论的隧道开挖稳定性研究

Modeling tunnel excavation with coupled seepage and stress fields

隧道工程中的渗流问题是富水地质中普遍存在的问题,对于岩土工程而言,研究其内部渗流场的分布规律,掌握渗流场作用下结构的受力状况是十分必要的。对红石沟隧道工程用FLAC3D软件数值模拟进行分析,计算结果表明在渗流场作用下,围岩的应力和位移显著增加,因此在进行隧道开挖及支护时必须考虑渗流作用。

Numerical analysis using coupled seepage and stress fields was performed to model the tunnel excavation at the Hongshigou tunnel project. The analysis indicated a significant increase in stress and deformation in the rock due to the consideration of seepage. Therefore, it is important to consider the effect of coupled seepage effect on excavation and lining design.