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Finite Element Simulation of Rock Mechanical Properties in Rock Surrounding a Deep Tunnel with Water Leakage
Soil Mechanics and Foundation Engineering ( IF 0.8 ) Pub Date : 2020-06-22 , DOI: 10.1007/s11204-020-09647-2
F. Wang , Y. Fan , C. Guo , L. Qin , D. Hu

A finite element model is presented which simulates the tunnel construction process, and deformation and stress characteristics, in the surrounding rock during its operation stage. The pore water pressure and distribution law of leakage in the surrounding rock are calculated by considering the effect of groundwater. The results show that during the process of excavation, the surrounding rock undergoes a small degree of stress relief, and relatively low tensile stresses appear locally at the bottom of tunnel vaults and inverts. As tunnel leakage decreases, there is a time-dependent decrease in pore water pressure. However, stress in the supporting structures increases, and displacement and deformation in the surrounding rock increases as leakage continues.



中文翻译:

深水渗漏围岩中岩石力学特性的有限元模拟

提出了一个有限元模型,模拟了围岩在其运营阶段的隧道施工过程,变形和应力特性。考虑地下水的影响,计算了围岩的孔隙水压力和渗漏分布规律。结果表明,在开挖过程中,围岩的应力释放程度较小,隧道拱顶和倒立面的底部局部出现了较低的张应力。随着隧道渗漏的减少,孔隙水压力会随时间而下降。然而,随着泄漏的继续,支撑结构中的应力增加,并且围岩中的位移和变形增加。

更新日期:2020-06-23
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