3D coupled analysis on tunneling under groundwater

지하수가 터널굴착에 미치는 영향에 관한 3차원 연계해석

  • 유충식 (성균관대학교 토목환경공학과)
  • Published : 2003.06.01

Abstract

This paper presents the effect of groundwater on tunnel performance. Fundamental issues in tunneling under high groundwater table together with an illustrative example are discussed. The effect of groundwater on tunnel excavation was examined using a 3D stress-pore pressure coupled finite-element analysis. The results of the 3D coupled analysis were then compared with those of a total stress analysis. Examined items included earth and pore pressures around lining, and lining stresses. Also the examined include face movement and ground surface movements. The results indicated that the effect of groundwater on tunnel excavation can only be captured through a fully coupled analysis. Implementations of the findings from this study are discussed in great detail.