한국안전학회지 (Journal of the Korean Society of Safety)

  • 제32권3호
  • /
  • Pages.112-116
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  • 2017
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  • 1738-3803(pISSN)
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  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
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토사재해 취약 지역 분류 및 구조적 대안 수립을 위한 위험지표 적용

Application of Risk Indexes for Classifying Vulnerable Zone and Planning Structural Alternative in Preparation for Debris Flow Disaster

  • 오승명 (인천대학교 안전공학과) ;
  • 송창근 (인천대학교 안전공학과) ;
  • 정민형 (한국시설안전공단 시설성능연구소) ;
  • 성주현 (한국시설안전공단 시설성능연구소)
  • Oh, Seung Myeong (Department of Safety Engineering, Incheon National University) ;
  • Song, Chang Geun (Department of Safety Engineering, Incheon National University) ;
  • Jung, Min Hyung (Institute of Infrastructure Safety, Korea Infrastructure Safety Corporation) ;
  • Seong, Joo-Hyun (Institute of Infrastructure Safety, Korea Infrastructure Safety Corporation)
  • 투고 : 2017.02.28
  • 심사 : 2017.06.05
  • 발행 : 2017.06.30
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초록

This study applied risk indexes to the disaster flow event occurred at Mt. Umyeon region in 2011. A 2D hydrodynamic model was employed to calculate flow characteristics, and the model was validated against two dam break flow problems conducted by Bellos and EU CADAM project. The model performance was shown to be satisfactory. In order to determine which index is more appropriate to assess the vulnerability of debris flow, 3 risk indexes (FII, FHR and VDI) were considered. It was found that VDI, which determines the risk level only by the velocity factor, consistently predicted the risk level corresponding to 6 because the velocity range was widely organized. However, in the case of FII and FHR, the risk was reasonably quantified due to combined consideration of significant factors of flow velocity and debris thickness. Therefore, FII and FHR are expected to be more accurate than VDI. However, two indexes still need to be improved to include major factors such as debris density or material properties.

키워드

참고문헌

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