KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Development of Urban Flood Risk Index for the Cheonggyecheon Watershed Using SWMM

SWMM을 이용한 청계천 유역의 도시홍수 위험도 지수 개발

  • 양정석 (국민대학교 건설시스템공학부) ;
  • 김일환 (국민대학교 건설시스템공학부)
  • Received : 2016.01.12
  • Accepted : 2016.04.12
  • Published : 2016.06.01
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Abstract

In this study, we analyzed th Cheonggyecheon watershed for urban flood risk index. SWMM model configuration based on each watershed data. And it was set as the final index calculated indicators related to the humanities, social and environmental. Each indicator was standardized and weighted using the Delphi method. Finally, select the danger area through urban flood risk index. Determined 12 indices according to the hazard and vulnerability. Vulnerability is selected the index divided by three factors. 21 watersheds were analyzed through urban flood risk index. The top of three areas of index is Jeongneung 1, Majang, Pil-dong, each index is 0.533, 0.494, 0.381. The lowest index is soongin 0.216. Urban flood risk index developed in this study can be applied to other regions in Korea for establishing national water resources management plan.

본 연구에서는 도시홍수 위험도 지수 산정을 위하여 청계천 및 정릉천 유역을 분석하였다. 각 유역 배수구역별 자료를 토대로 SWMM 모델링을 구축하고 인문, 사회 환경과 관련하여 최종 지수 산정을 위한 지표를 선정하였다. 수집된 자료는 요소에 따라 정의하였다. 각 요소별 가중치는 Delphi 기법을 이용하였으며, 각 지표에 대한 표준화를 실시하고 최종적으로 위험도에 따른 위험 유역을 선정 했다. 유해성 및 취약성에 따라 12개의 지표를 결정하였다. 그중 취약성의 경우 세분화하여 3가지 요소로 나누어 지표를 선정했다. 총 21개의 배수구역별 지수를 산정하였으며 정릉1이 0.533, 마장 0.494, 필동 0.381, 순으로 나타났으며, 가장 적은 지수는 숭인 0.216으로 나타났다. 도시홍수 위험도 지수를 통해 우리나라 전 지역에 적용하게 되면 향후 수자원 정책 수립에 있어서 많은 도움이 될 것으로 사료된다.

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