Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Analysis of outflow reduction effect of bioretention in small watersheds during short-term rainfall

단기강우 시 소유역내 식생저류지의 유출량 저감성능 분석

  • Kim, Jaemoon (Education & Research Center for Infrastructure of Smart Ocean City, Pusan National University) ;
  • Baek, Jongseok (Advanced Infrastructure Department, Korea Institute of Hydrological Survey) ;
  • Kim, Byungsung (R&D Promotion & Support Dept., K-water Research Institute) ;
  • Kwon, Soonchul (Department of Civil and Environmental Engineering, Pusan National University)
  • 김재문 (부산대학교 스마트해양도시인프라교육연구단) ;
  • 백종석 (한국수자원조사기술원 첨단인프라실) ;
  • 김병성 (K-water연구원 연구관리처) ;
  • 권순철 (부산대학교 사회환경시스템공학과)
  • Received : 2023.09.13
  • Accepted : 2023.11.16
  • Published : 2023.12.31
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Abstract

Low Impact Development (LID) technology has been attracting attention as a countermeasure to solve frequent flood damage in urban areas. LID involves recovery of the natural circulation system based on infiltration and storage capacity at the site of rainfall runoff, to protect the aquatic ecosystem from the effects of urbanization. Bioretention as an element of LID technology reduces outflow through storage and infiltration of storm water runoff, and minimizes the effects of non-point pollutants. Although LIDs are being studied extensively, the amount of quantitative research on small watersheds with bioretention has been inadequate. In this study, a bioretention model was constructed in a small watershed using Korea-Low Impact Development Model (K-LIDM), which was conducted quantitative hydrologic analysis. We anticipate that the results of the analysis will be used as reference data for future bioretention research related to watershed characteristics, vegetation type, and soil condition.

도심지의 잦은 홍수피해를 해결하기 위한 대책으로 저영향개발기법은 지속적으로 연구중에 있다. LID는 도시화의 영향으로 부터 물순환을 회복하기 위해 강우유출 지점에서 침투 및 저류를 기반으로 개발이전의 물순환 상태로 회복하기 위해 도입된 기술이다. 그 중 식생저류지는 LID 요소중 하나로 우수유출수의 침투 및 저류를 통해 유출량을 감소하고, 비점오염원 저감 효과를 가지고 있다. 식생저류지의 연구는 지속적으로 수행되었으나 소유역 규모에서의 정량적 성능연구는 부족한 실정이다. 본 연구에서는 정량적 수문해석을 할 수 있는 K-LIDM (Korea-Low Impact Development Model)을 활용하여 식생저류지 유역 구축을 통해 유출량 저감성능 분석을 수행하였다. 연구결과는 추후에 유역특성, 식생유형 및 토양상태 등 여러가지 변수들을 포함한 연구수행시 참고자료로 활용될 수 있을것으로 사료된다.

Keywords

Acknowledgement

This work is financially supported by Korea Ministry of Environment (MOE), as "Graduate School specialized in Climate Change." "This work was supported by the Brain Korea 21 FOUR Project in the Education & Research Center for Infrastructure of Smart Ocean City (i-SOC Center)."

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