Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2010.03a
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- Pages.279-290
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- 2010
Debris Flow Risk Evaluation and Ranking Method for Drainage Basin adjacent to Road
도로인근 유역의 토석류 위험평가 및 등급화 방안
- Kim, Kyung-Suk (Korea Expressway Corporation) ;
- Jang, Hyun-Ick (Korea Expressway Corporation)
- Published : 2010.03.25
Abstract
Technical countermeasures against debris flow should be established upon the risk level of the target location. Risk of debris flow should consider the hazard imposed by debris flow and vulnerability of the facilities to debris flow. In this research, we have defined the target location for risk evaluation and suggested scoring method of hazard of debris flow and vulnerability of road to debris flow. By defining risk rank into 6 categories in terms of possibility of damage during rainfall and using the risk scores of 46 debris flow cases, we have suggested risk ranking matrix. The method can be used in ranking the drainage basin adjacent to road by simply determining the hazard with vulnerability score and can be used for planning the debris flow countermeasures.