| Title |
A Risk Evaluation Method of Slope Failure Due to Rainfall using a Digital Terrain Model |
| Authors |
채종길 ; 정민수 ; Torii Nobuyuki ; Okimura Takashi |
| Keywords |
slope failure;rainfall;safety factor;hazard map;risk evaluation;사면파괴;강우;안전율;방재공간;위험도 평가 |
| Abstract |
Slope failure in South Korea generally occurs by the localized heavy rain in a rainy season and typhoon, and it annually causes huge losses of both life and property because nearly 70% of territory in South Korea is covered with mountains. It is required to measure the risk of slope failure quantitatively before proper prevention methods are provided. However, there is no way to estimate the risk based on realtime rainfall, geological characteristics, and geotechnical engineering properties. This study presents the development of digital terrion model to predict slope stability using infinite slope stability theory combined with temporal groundwater change. Case studies were performed to investigate factors to affect slope stability in Japan. |