ABSTRACT
The authors have tried to propose the geotechnical model of Utsunomiya City, Tochigi Prefecture, Japan based on borehole data from the local governments of Tochigi prefecture, Japan by the Three-dimensional grid model method. Its grid has 250m in each side. This method includes averaged geological feature around boreholes by geostatistical concept. At first the authors had assembled the borehole data from the local government. Actually, even though it is difficult to get sufficient numbers of borehole data, it has done someway. The authors discussed the geological and topological characteristics in this area. Finally, the authors carried out seismic stability analysis to consider in the area. Based on the results, we considered the seismic intensity of the area on the geotechnical model. As local government also has opened hazard map on the website, we compared those results and discussed the seismic response in this area.
