KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Analysis of the Applicability of Flood Risk Indices According to Flood Damage Types

홍수피해유형별 홍수 위험 지수 적용성 분석

  • 김묘정 (경북대학교 건설환경에너지공학부) ;
  • 김광섭 (경북대학교 건설환경에너지공학부)
  • Received : 2017.11.06
  • Accepted : 2017.12.27
  • Published : 2018.02.01
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Abstract

In this study, the applicabilities of flood risk indices using FVI from IPCC, PSR method from OECD, and DPSIR method from EEA, were analyzed. Normalized values of daily maximum rainfall, hourly maximum rainfall, ten minute maximum rainfall, annual precipitation, total days of heavy rainfall (more than 80mm/day), density of population, density of asset, DEM, road statistics, river maintenance ratio, reservoir capacity, supply ratio of water supply and sewerage, and pumping capacity were constructed from 2000 to 2015 for nationwide 113 watersheds, to estimate flood risk indices. The estimated indices were compared to 4 different types of flood damage such as the number of casualties, damage area, the amount of flood damage, and flood frequency. The relationships between flood indices and different flood damage types demonstrated that the flood index using the PSR method shows better results for the amount of flood damage, the number of casualties and damage area, and the flood index using the DPSIR method shows better results for flood frequency.

본 연구에서는 IPCC에서 제시한 기후변화 취약성 평가 이론, OECD에서 개발한 PSR 모형, EEA에서 개발한 DPSIR 모형을 활용하여 산정된 홍수위험지수들의 적용성을 분석하였다. 홍수위험지수 산정을 위하여 세부 지표로 일 최대 강수량, 1시간 최대 강수량, 10분 최대 강수량, 연평균 강수량, 1일 강수량이 80mm 초과한 일수, 인구 밀도, 자산 밀도, DEM, 도로연장, 하천개수율, 유수지용량, 하수도 보급률, 배수펌프시설 등의 2000년에서 2015년도 자료를 정규화하여 전국 113 중권역 단위로 구축하였다. 산정된 홍수위험지수는 4개의 홍수피해유형 즉 인명피해, 피해면적, 피해액, 피해빈도와 비교 분석하였다. 홍수위험지수와 피해유형별 상관분석 결과 피해액, 인명피해 및 피해면적에 대해서는 PSR 기법이, 홍수발생빈도에 대해서는 DPSIR 기법에 따른 지수의 적용성이 높은 것으로 나타났다.

Keywords

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