Journal of the Korean Society of Hazard Mitigation (한국방재학회 논문집)

Korean Society of Hazard Mitigation (한국방재학회)
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Applications of EPA-SWMM and FHWA Hydraulic Toolbox to Analyze Cause of Urban Inundation

도시내수침수원인 분석을 위한 EPA-SWMM 및 FHWA Hydraulic Toolbox 모형의 적용

  • Yoo, Do Guen (Research Center for Disaster Prevention Science and Technology, Korea Univ.) ;
  • Choi, Hyeon Seok (School of Civil, Environmental and Architectural Engineering, Korea Univ.) ;
  • Kim, Joong Hoon (School of Civil, Environmental and Architectural Engineering, Korea Univ.)
  • 유도근 (고려대학교 공과대학 방재과학기술연구소) ;
  • 최현석 (고려대학교 공과대학 건축사회환경공학부) ;
  • 김중훈 (고려대학교 공과대학 건축사회환경공학부)
  • Received : 2014.09.16
  • Accepted : 2014.12.19
  • Published : 2015.02.28
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Abstract

In order to analyze the cause of urban inundation, Y area, which is one of the city in Gyeonggi-do province, is selected. And we analyzed the past storm event on July 2011 using hydrologic and hydraulic methods to check whether the flood control structures and plans are good or not. For simulating the past flood event, in terms of hydrology and hydraulics, the urban storm water management model(EPA-SWMM) was used and for analyzing the roadway discharge and collection efficiency of trench, FHWA Hydraulic Toolbox model was used. At the results, it was found that the abnormal linkage of storm sewers and the insufficient number of trench was the primary causes of flooding. In conclusion, with using both storm water management model and FHWA Hydraulic Toolbox model, the cause analysis of urban inundation became simple and effective and also it could be used for establishing inundation reduction plan as the effective measures.

본 연구는 2011년 7월 발생한 경기도 Y시 한 지역의 침수피해원인을 명확히 규명하기 위하여 수행되었다. 해당 지역의 실 강우사상에 대해 수리, 수문학적으로 분석하여, 침수지역 주변의 우수배제 계획과 노면배수 계획이 적절한지의 여부를 분석하였다. 수리 수문학적 측면에서 당시의 상황을 재현하는데 사용된 모형은 도시우수관망 해석 프로그램인 EPA-SWMM을 이용하였으며, 도로배수량 및 우수 받이의 차집효율 분석을 위해서는 미국 운수부의 연방도로관리청에서 개발된 FHWA Hydraulic Toolbox 모형을 구축하여 결과를 도출하였다. 분석결과, 침수 피해 원인은 우수관 연결 상태와 빗물받이 설치 간격에서 기인한 것으로 분석되었다. 본 연구에서 사용된 강우-유출해석 모형과 도로 노면배수량 산정 모형을 동시에 활용할 경우 도시내수침수의 원인을 상세히 분석하는데 용이하였으며, 내수침수 저감을 위한 계획 수립에 활용이 가능할 것으로 판단된다.

Keywords

Acknowledgement

Supported by : 국토교통부

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