1994 Volume 4 Pages 155-162
This paper described the stress distribution near face due to tunnel excavation based on the concept of effective stress. The investigation was carried out by means of both axi-symmetric analysis and threedimensional analysis from a viewpoint of effective stress. The investigation made it clear that the applied method considering progress of face was very useful to predict reasonable geomechanical behavior near face during excavation. Finally, we proposed the effective measures to stabilize face and tunnels based on the numerical analysis results.