Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2009.03a
- /
- Pages.930-939
- /
- 2009
Disaster Vulnerability Analysis for Steep Slope Failure
급경사지 재해도 분석
-
Choi, Eun-Kyeong
(Geo-Information Research Group Co., Ltd.) ;
-
Kim, Sung-Wook
(Geo-Information Research Group Co., Ltd.) ;
-
Kim, Sang-Hyun
(Pusan National University) ;
-
Park, Dug-Keun
(National Emergency Management Agency) ;
-
Oh, Jeong-Rim
(National Emergency Management Agency)
-
최은경
((주)지아이, 지반정보연구소) ;
-
김성욱
((주)지아이, 지반정보연구소) ;
-
김상현
(소방방재청 방재연구소) ;
-
박덕근
(소방방재청 방재연구소) ;
-
오정림
(소방방재청 방재연구소)
- Published : 2009.03.27
Abstract
Most of steep slope failures occurring in Korea have appeared during the localized heavy rain period, whereas the evaluation model of a disaster vulnerability analysis that has been proposed to date, has been prepared in consideration only of external factors comprising geographical features. This study calculated a wetness index and a contributory area which delivers moisture to the upper slant surface during the rainfall period, and also conducted a disaster vulnerability analysis in consideration of the convergence of surface water as well as the water system created during the occurrence of rainfall by including a curvature that shows a close relevance with the shape of the minute water system that is created temporarily during the occurrence of rainfall and with the convergence and divergence of surface water. When compared with a steep slope failure occurring within a selected model district in order to verify the prepared disaster analysis, a landslide occurring in the model district had emerged in a region in which the disaster vulnerability analysis was high and the density of the minor water system was also high. If these research results are extended nationwide, it is the most effective to use a disaster vulnerability analysis and the density of the minute water system; and it is supposed to be the simplest and the most effective method for preparing a disaster analysis of mountainous land shape such as the model district.