Performance of Shotcrete Lining due to Tunneling and Groundwater Interaction Using a 3D Stress-pore Pressure Coupled Analysis

응력-간극수압 3차원 연계해석을 이용한 터널시공과 지하수의 상호작용으로 인한 라이닝 거동특성 연구

This paper presents the interaction effect between tunneling and groundwater on tunnel behavior. A parametric study is then conducted on the various tunneling situations frequently encountered in Seoul area using a 3D stress-pore pressure coupled finite-element model with emphasis on the effects of ground and lining permeabilities. It is shown that the ground and lining responses are significantly influenced by the relative permeability between the ground and the lining, and that the circumferential pre-grouting is effective in minimizing the tunnelling and groundwater interaction.