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Abstract ▼ AI-Helper

This paper presents the effect of tunneling and groundwater interaction on tunnel behavior. As part of this study, design issuses for tunneling situations similar to that considered in this study are first identified. A parametric study is then conducted on tunneling situations frequently encountere...

This paper presents the effect of tunneling and groundwater interaction on tunnel behavior. As part of this study, design issuses for tunneling situations similar to that considered in this study are first identified. A parametric study is then conducted on tunneling situations frequently encountered in Seoul area using a 3D stress-pore presure coupled finite-element model with emphasis on the effects of ground and lining permeabilities. The results indicate that tunneling in water bearing ground results in a deeper and wider settlement trough, increased axial thrusts in shotcrete lining than those without the groundwater. Also revealed is that the axial thrusts in shotcrete lining are governed by the relative permeability between the ground and the lining. Design implications of the findings from this study are discussed.

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