Abstract
Behaviour of fractured zone landslide is analysed based on the soil mechanics from a stand point of effective stress. Analysis of displacement of landslide is conducted considering the creep phenomenon of clay and the stress level at slip layer. Creep characteristic of landslide clay is investigated by the triaxial creep test. Stress level is obtained by the stability analysis considering strength parameters of clay obtained from slip surface. Relative rate of creep deformation at each stress level corresponding to each height of ground water table is calculated using the results of creep tests. The results of calculation explain qualitatively the behaviour of Nuts and Inuyose landslides.
