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

Korean Society of Hazard Mitigation (한국방재학회)
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Determination of Optimal Locations of Urban Subsurface Storage considering SWMM Parameter Sensitivity

SWMM 매개변수 민감도를 고려한 도시지하저류조 최적위치 선정

  • Lee, Jung Ho (Dept. of Civil & Environmental Engineering, Hanbat National University) ;
  • Song, Yang Ho (Dept. of Civil & Environmental Engineering, Hanbat National University) ;
  • Jo, Deok Jun (Division of Architecture & Civil Engineering, Dongseo University)
  • 이정호 (국립한밭대학교 건설환경공학과) ;
  • 송양호 (국립한밭대학교 건설환경공학과) ;
  • 조덕준 (동서대학교 건축토목공학부)
  • Received : 2013.07.10
  • Accepted : 2013.07.17
  • Published : 2013.08.31
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Abstract

Recently, the danger of flooding has increased due to the result of extreme climate change and urbanization around the metropolitan areas. To prevent this kind of problems, installing underground retaining facility around the metropolitan basin has been discussed. Even though the several researches related to the underground retaining facility are on progress, the general consideration of the capacity and the location is unsatisfying. Therefore, this research has developed an optimal model which would help to decide an adequate capacity and location according to the numbers of the facilities that need to be installed. For this optimal technique, Harmony Search (HS) is utilized, and SWMM (Storm Water Management Model) 5.0 DLL is constructed accordingly for the better interpretation of hydraulic, hydrological. And the sensitivity analysis was performed for SWMM parameters such as manning's roughness coefficient and manhole loss coefficient which affect overflow in the sewer network. And this sensitivity analysis was considered to determine the optimal positions of storages. The developed optimal model has been simulated in BEXCO district in Busan, and it has determined the positions according to the different numbers of the facilities which need to be installed.

최근 기후변화 및 도시화로 인한 도시유역의 침수위험은 증가하고 있으며, 이를 저감하기 위한 방법으로 도시유역 내 지하저류조 설치가 논의되고 있다. 이에 따라 도시유역에서의 지하저류조와 관련된 연구들이 진행되고 있으나, 저류조 용량 및 위치의 문제를 종합적으로 고려하는 연구는 아직 미진한 상태이다. 따라서 본 연구에서는 지하저류조 설치 시 시설 가능 개수에 따른 도시지하저류조 최적위치 및 규모 선정을 동시에 고려할 수 있는 최적화 모형을 개발하였다. 이를 위한 최적화 기법으로는 화음탐색법(Harmony Search, HS)을 이용하였으며, 수리 수문 해석을 위하여 대표적 도시유출 해석 모형인 SWMM(Storm Water Management Model) 5.0 DLL을 연계 구성하였다. 또한 SWMM의 매개변수중 관거의 조도계수 및 맨홀의 손실계수에 따른 월류 발생 양상에 대한 민감도를 분석하였으며, 지하저류조의 최적위치 선정에 이를 고려하였다. 개발된 최적위치 선정 모형은 부산 BEXCO 유역에 모의 적용되었으며, 지하저류조 설치 가능 개수를 변화시켜 가면서 각각의 경우에 따른 최적의 위치 선정 및 침수 저감효과를 분석하였다.

Keywords

Acknowledgement

Grant : 복합지하공간 수해 방지를 위한 저류공동 건설기술 개발

Supported by : 한국건설교통기술평가원

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Cited by

  1. Uncertainty Quantification Index of SWMM Model Parameters vol.48, pp.2, 2015, https://doi.org/10.3741/JKWRA.2015.48.2.105