Abstract
This paper presents results of model tests in the laboratory and the numerical analyses by the kinds of static and dynamic method carried out as a series of the research on the seismic stability of a large scale slopes. As these results, it is clear that the failure mechanisum of slope between pseudo-static inclination test and dynamic test using shaking table differ and the circular arc slip method gives the severest assessment in the kinds of analyses of seismic stability. In addition, the relationship between the seismic coefficient of pseudo-static test and the acceleration of dynamic test is evaluated quantatively and it is proposed to use the equivalent seismic coefficient obtained from the response equivalent acceleration of slope as seismic force for seismic stability evaluation by static method.