KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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A Study on Runoff Analysis of Urban Watershed by Hydrologic Infiltration Experiment of Permeable Pavement

투수성 포장의 침투 실험을 통한 도시유역 유출 변화 연구

  • 구영민 (인제대학교 환경공학과, 한국수자원공사 K-water연구원) ;
  • 조재안 (인제대학교 환경공학과) ;
  • 김영도 (인제대학교 환경공학과(낙동강유역환경연구센터)) ;
  • 박재현 (인제대학교 토목도시공학부)
  • Received : 2013.01.17
  • Accepted : 2013.02.19
  • Published : 2013.03.30
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Abstract

Recently, due to increase of the impervious layer, the storage of surface layer has been reduced. Otherwise the peak runoff and the total surface runoff have been raised. Because of larger amount of the peak runoff and the rapid time of concentration, the flood damage of the urban watershed was increased. The groundwater level is descended by reducing the amount of rainfall that infiltrated into the soil. Thereby the hydrologic cycle is degenerated by the dry stream. Therefore, in this study, the evaluation and the quantitative analysis of the percolation effect were performed through the infiltration experiment of permeable pavement, which is one of the ways that can reduce the problem of the dry stream. Also the SWMM model is used to analyze the effect of the hydrologic cycle for permeable pavement in Changwon stream and Nam stream watersheds, with the coefficient of permeability from the infiltration experiments.

최근에 불투수층의 증가로 인하여 지표면의 저류량이 감소하고 첨두유출과 전체 지표면유출은 증가하고 있다. 첨두유출량의 증가와 빠른 도달시간으로 인하여 도시유역의 홍수 피해가 증가하고 있다. 또한 토양으로 침투되는 강우량이 감소하여 지하수위가 하강한다. 그러므로 도시하천의 건천화가 진행되어 유역의 물 순환이 악화된다. 따라서 본 연구에서는 건천화 문제를 감소시킬 수 있는 방안중 하나인 투수성 포장의 침투실험을 통하여 투수효과를 정량적으로 분석 및 평가하였다. 또한 SWMM 모형을 창원천 및 남천 유역에 적용하여 침투실험에서 얻어진 투수계수를 이용하여 투수성 포장의 물순환 영향을 분석하였다.

Keywords

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