Risk evaluation of steep slope failure using a slope angle and mean curvature

Hayata NISHI; Chiaki T. OGUCHI

Presentation information

International Session (Oral)

Symbol H (Human Geosciences) » H-GM Geomorphology

[H-GM02_30PM1] Geomorphology

Wed. Apr 30, 2014 2:15 PM - 4:00 PM 422 (4F)

Convener:*Hiroshi Shimazu(Department of Geography, Faculty of Geo-Environmental Science, Rissho University), Chiaki T. Oguchi(Geosphere Research Institute, Saitama University), Masayuki Seto(Fukushima Future Center for Regional Revitalization, Fukushima University), Chair:Hiroshi Shimazu(Department of Geography, Faculty of Geo-Environmental Science, Rissho University)

3:45 PM - 4:00 PM

[HGM02-P02_PG] Risk evaluation of steep slope failure using a slope angle and mean curvature

3-min talk in an oral session

Hayata NISHI¹, *Chiaki T. OGUCHI² (1.Civil and Engineering Department, 2.GRIS. Saitama University)

Keywords:Slope failure, Risk evaluation

According to the previous techniques for the evaluation of slope failures, only steep slopes are taken into account. However, the influence of earthquakes on slope failures has not been considered on the hazard map delivered by local government. After the Great East Japan Earthquake occurred in 2011, Necessity for considering earthquakes on to slope failure evaluation is increasing. Therefore, the present study focused on risk evaluation of steep slope failures caused by earthquakes. Within various techniques, a technique proposed by National Institute for Land and Infrastructure Management, was adopted in this study. With comparing manual and GIS calculations to obtain the parameters of slope angle and mean curvature, the degree of the risk was evaluated. The target slope is Mt. Shinobu, in Fukushima Prefecture. After examination , it is resulted in that the evaluation using GIS is useful as well.