Coupled Numerical Analysis of Tunnel Excavation in Saturated Soft Clay under High Groundwater

摘要: A coupled numerical simulation of a river-crossing shield tunnel excavation in saturated soft clay with high groundwater has been performed using three-dimensional finite difference model, which takes into account variation soil permeability stress, anisotropy permeability, reduction effect joints on segment bending stiffness and the hardening process synchronized grouting material. Groundwater seepage conditions around tunnel, moment, axial forces strength safety factor as well deep displacement during diving are investigated numerically. The analyses provide valuable information concerning mechanical behavior hydrological field advancing. result also is benefited to control for under water table.