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Journal of the Korean Society of Hazard Mitigation 2014;14(4):205-212.
Published online August 31, 2014.
물리적 강도와 사회적 취약성을 통합한 토석류 위험도 예측모형 개발
우충식, 이창우, 김경하, 권현정
Development of Risk Prediction Model for Debris Flow Combining Physical Impact and Social Vulnerability
Choongshik Woo, Changwoo Lee, Kyongha Kim, Hyunjung Kwon
Abstract
Recently, the loss of life and property is increasing by debris flow that is occurring very often in urban zone near mountainous area. However, because most studies have only focused on prediction of landslide occurrence and damage area by debris flow, the study on risk prediction reflecting a social vulnerability is demanded. In this study, we developed the risk prediction model for debris flow that was combined with physical impact(magnitude) of debris flow and social vulnerability. The risk of combining magnitude and vulnerability for debris flow was classified 1~5 grades according to dangerous degree, and the 1st grade is most dangerous. Using this model, the case study adapting Yongin city, Gyeonggi province shows that 1st grade are 2 sites, 2nd grade are 40 sites, 3rd grade are 60 sites, 4th grade are 124 sites, 5th grade are 53 sites. To compare this model by preceding research, we adapted to Mt. Umyeon which was damaged by debris flow in 2011. As a result, the risk of debris flow on this area was shown in 2nd grade on each model.
Key Words: Debris flow; Risk prediction model for debris flow; Social vulnerability; Magnitude
요지
최근 도시생활권에서 토석류가 빈발하여 인명 및 재산피해가 증가하고 있다. 그러나 많은 연구가 산사태 발생 및 토석류 피해범위 예측에 중점을 두어 사회적 취약성이 반영된 연구가 요구되고 있다. 따라서 본 연구에서는 토석류의 물리적 강도와 사회적 취약성을 결합하여 토석류 위험도 예측모형을 개발하였다. 토석류 위험도 예측모형은 1~5등급으로 구분되며 1등급이 가장 위험한 등급이다. 경기도 용인시를 대상으로 토석류 위험도를 예측한 결과 전체 279개소 중 1등급은 2개소, 2등급은 40개소, 3등급은 60개소, 4등급은 124개소, 5등급은 53개소로 나타났다. 토석류 위험도 예측모형을 선행연구 결과와 비교하기 위해 우면산 산사태지역을 적용한 결과 토석류 위험등급이 각 모델에서 2등급으로 나타났다.
핵심용어: 토석류; 토석류 위험도 예측모형; 사회적 위험도; 물리적 위험도


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