Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Study on the Improvement Method of Flood Risk Assessment by Flood Damage Area

홍수피해예상지역을 고려한 홍수위험도 산정기법 개선방안 연구

  • Hong, Seungjin (Korea Institute of Civil Engineering and Building Technology, Hydro Science and Engineering Research Institute) ;
  • Joo, Hongjun (Department of Civil Engineering, Inha university) ;
  • Kim, Kyungtak (Korea Institute of Civil Engineering and Building Technology, Hydro Science and Engineering Research Institute)
  • 홍승진 (한국건설기술연구원 수자원하천연구소) ;
  • 주홍준 (인하대학교 토목공학과) ;
  • 김경탁 (한국건설기술연구원 수자원하천연구소)
  • Received : 2017.10.16
  • Accepted : 2017.11.03
  • Published : 2017.11.30
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Abstract

The aim of this study is to improve Potential Flood Damage(PFD) that a flood risk assessment technique used in the National Water Resource Plan comprehensive plan for water resources, which is a top-level plan related to domestic water resources and Flood Risk Indices. Both methods are used to evaluate flood control risks. However, there is a problem of reliability because the problem of data utilization and the damage that occurred in a specific area are applied as an average concept. Therefore, this study improved the method for analysis by components and the flood inundation area was limited to flood damage area. Also, the improvement of the method and the application of the recently provided GIS data to the flood damage prediction area were proposed to improve the usability of the existing method. The existing analysis method and the improved method were applied to the test watershed by each case.

본 연구에서는 우리나라 수자원 관련 최상위계획인 수자원장기종합계획에서 활용했던 홍수위험도 산정 기법인 홍수피해잠재능(PFD)와 홍수위험도지표에 대한 개선을 목표로 연구를 진행하였다. 두 방법론 모두 치수위험성을 평가하는 항목이지만 자료 활용에 대한 문제점과 특정지역에 발생한 피해를 평균개념으로 적용하였기 때문에 신뢰성에 문제가 지적되고 있다. 이에 본 연구에서는 1) 항목별 분석을 위한 분석자료 및 방법의 개선, 2) 홍수범람예상지역을 홍수피해범위로 제한하여 방향성을 설정하였다. 기법의 개선 및 최근 제공되는 GIS 자료를 홍수피해예상지역에 적용함으로써 기존 방법의 활용성을 높일 수 있는 개선방안을 제안하고, 기존 분석기법과 개선된 방법을 CASE별로 시범유역에 적용하여 비교 분석을 실시하였다.

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References

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