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In Itoshima area of Japan, many potential dangerous slopes are identified around residence buildings. The assessment map of landslide hazard has been developed based on the Japanese standard method. H...owever, the method is based on the field investigation which is only effective for local and site specification and is usually difficult to apply for landslide hazard assessment in a wide area. This paper examines the major factor affecting landslide consequence in Itoshima area, discusses the Japanese standard method for measuring landslide hazard scenarios and proposes an integrated methodology by combining Japanese standard method and Geographical Information System (GIS) method to obtain the potential slope instability hazard in a wide study area. The identified potential slope hazards are evaluated with geology to find the most potential dangerous slope in the area. Moreover, a detail 3D slope stability analysis model is performed in the most potential slope instability area, and the variation of safety factor can be obtained.続きを見る
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