Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Development of Coupled SWAT-SWMM Model (I) Model Development

SWAT-SWMM 결합모형의 개발 (I) 모형의 개발

  • 김남원 (한국건설기술연구원 수자원연구부) ;
  • 원유승 (한국건설기술연구원 수자원연구부)
  • Published : 2004.07.01
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Abstract

From the continuous long-term rainfall-runoff standpoint, the urbanization within a watershed causes land use change due to the increase in impervious areas, the addition of manmade structures, and the changes in river environment. Therefore, rainfall-runoff characteristics changes drastically after the urbanization. Due to these reasons, there exists the demand for rainfall-runoff simulation model that can quantitatively evaluate the components of hydrologic cycle including surface runoff, river flow, and groundwater by considering urban watershed characteristics as well as natural runoff characteristics. In this study, continuous long-term rainfall-runoff simulation model SWAT-SWMM is developed by coupling semi-distributed continuous long-term rainfall-runoff simulation model SWAT with RUNOFF block of SWMM, which is frequently used in the runoff analysis of urban areas in order to consider urban watershed as well as natural watershed. The coupling of SWAT and SWMM is described with emphasis on the coupling scheme, model limitations, and the schematics of coupled model.

장기적 유출 측면에서 유역의 도시화는 불투수면적의 확대로 인한 토지이용변화, 인위적 구조물의 설치여부, 하천 환경의 변화를 유발하며 따라서 도시화되기 이전과 매우 다른 형태의 유출거동 특성을 가진다. 따라서 자연적인 유출 성분변화 특성은 물론 도시화 유역 특성변화요소를 적절히 반영함으로써 지표수, 하천수, 지하수 등의 수문순환 요소를 장기적인 측면에서 정량적으로 평가할 수 있는 유출모의모형이 필요하다. 본 연구에서는 준 분포형 장기 유출모형인 SWAT모형과 도시지역의 유출해석에 주로 이용되는 SWMM 모형의 RUNOFF 블록을 결합함으로써 자연유역은 물론 도시유역의 제반 유역특성을 충분히 고려할 수 있는 장기유출모형인 SWAT-SWMM 모형을 개발하였다. SWAT-SWMM 결합모형의 구정방법 및 모형의 한계 그리고 결합모형의 모식을 중심으로 두 모형의 결합상황을 기술하였다.

Keywords

References

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