不連続性岩盤におけるトンネル掘削時の地山挙動に関する数値実験

抄録

Recently, the need for shallow tunnel with large cross-section which has three vehicular lanes such as the New Tomei and Meishin Expressway is increasing. In the case of these tunnels, influence of geometrical and mechanical properties of rock joints on stability of surrounding rock masses are not enough to be investigated for lack of enough experiences.
Therefore, in this research, some numerical investigation by using distinct element method (UDEC code) is carried out. Then, the effect of deformation property of rock joints on the behaviour of surrounding rock masses is discussed.