THE ANALYTICAL SIMULATION OF THE ARATOZAWA LANDSLIDE IN THE 2008 IWATE AND MIYAGI INLAND EARTHQUAKE

Abstract

 In recent years, earthquake-induced slope failures often occurred in our country. In order to examine the isolations of settlements in mountainous areas, it is necessary to predict damage states of slopes as well as seismic stability assessment of them. A numerical simulation of the 2008 Aratozawa landslide by the Smoothed Particle Hydrodynamics (SPH) is presented in this paper. Our SPH simulation reproduced the area of the landslide region and shear failure in the sliding soil successfully. However the estimated traveling distance of sliding block by the SPH was 20 % of the filed observation.