2004 Volume 14 Pages 1-7
For the shallow tunnel or the earth tunnnel, the ground water has significant influence on the stability of tunnel face. This report describes about evaluation of tunnel face stability by the rigid plastic finite element analysis (RPFEA) taking account of ground water level. In this report, we represent the effect of the ground water when water pressure is applied as a force on the ground. First, we consider the effect of draw-down of the groundwater level by a non-multi-element model of a two dimensional analysis (2DA). Next, we evaluate the face stability of an actual railway tunnel of Tohoku-Shinkansen by a multi-element model of 2DA.
