KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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A Study on the Runoff Reduction According to the Calculation Method of the LID Scale Considering the Land Use Area and the Application of Stormwater Storage Basin

토지이용면적을 고려한 LID 규모 산정 및 우수저류지 적용에 따른 유출저감 연구

  • 김병성 (한국수자원공사 K-water연구원) ;
  • 김재문 (부산대학교 사회환경시스템공학과) ;
  • 김성수 (한국수자원공사 K-water연구원) ;
  • 신강욱 (한국수자원공사 K-water연구원) ;
  • 이상진 (한국수자원공사 K-water연구원)
  • Received : 2020.11.19
  • Accepted : 2020.12.18
  • Published : 2021.06.01
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Abstract

Globally, due to climate change and urbanization, problems with water cycle destruction in urban areas frequently occur. In order to solve this problem, LID technique is being actively conducted the application in urban and research. In this study, some areas of the new city located in Busan was constructed using a widely used SWMM model to verify the effectiveness of the LID technique. This is to present a plan to maximize the efficiency of urban water cycle of the stormwater management target figure and the LID scale calculation method. In addition, the efficiency of runoff reduction using stormwater storage basin was analyzed in urban development projects. By calculating the scale of customized LID for each sub basin, the amount of runoff and peak runoff after LID application was reduced by 86.8 % and 69.5 %, respectively. Depending on the application of the stormwater storage basin, the reduction effect of peak runoff from 0.5 m3/s to 4.9 m3/s and delay effect of 8 minutes to 10 minutes was shown.

전 지구적으로 기후변화 및 도시화로 인해 도시지역에서 물순환 건전성에 대한 문제가 빈번하게 발생하고 있다. 이러한 문제를 해결하기 위해 LID 기법 연구 및 개발사업 시 도입이 활발하게 진행되고 있다. 본 연구에서는 LID 기법의 효율성을 검증하기 위해 많이 사용되고 있는 SWMM 모형을 이용하여 부산광역시 내 신도시의 일부지역을 구축하고, 빗물관리 목표량 산정 및 LID 규모 산정방법 제시를 통해 도시 물순환 효율성을 극대화하는 방안을 제시하고자 한다. 또한, 도시개발 사업 시 대상지 면적 대비 개발이 많이 일어나는 경우 우수저류지를 이용한 유출저감 효율성을 분석하였다. 소유역별로 맞춤형 LID 규모를 산정하여 LID 적용 후 유출량과 첨두유출량은 각각 86.8 %, 69.5 %의 저감효과가 나타났으며, 우수저류지의 적용에 따라 0.5 m3/s에서 4.9 m3/s의 첨두유출량 저감효과 및 8분에서 10분가량의 지체시간 지연효과가 나타났다.

Keywords

Acknowledgement

본 논문은 2020 CONVENTION 논문을 수정·보완하여 작성되었습니다.

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