Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Enhancement of HRSM4BMP Model to Simulate Sediment Reduction Efficiency Based on Watershed Scale

유역단위 유사 저감 효과 모의를 위한 HRSM4BMP모형의 개선

  • Ryu, Jichul (Watershed and Total Load Management Research Division, National Institute of Environmental Research) ;
  • Kum, Donghyuk (Department of Regional Infrastructure Engineering, Kangwon University) ;
  • Shin, Dong Seok (Watershed and Total Load Management Research Division, National Institute of Environmental Research) ;
  • Ahn, Ki Hong (Watershed and Total Load Management Research Division, National Institute of Environmental Research) ;
  • Park, Bae Kyung (Watershed and Total Load Management Research Division, National Institute of Environmental Research) ;
  • Lim, Koung Jae (Department of Regional Infrastructure Engineering , Kangwon University)
  • 류지철 (국립환경과학원 유역총량연구과) ;
  • 금동혁 (강원대학교 지역건설공학과) ;
  • 신동석 (국립환경과학원 유역총량연구과) ;
  • 안기홍 (국립환경과학원 유역총량연구과) ;
  • 박배경 (국립환경과학원 유역총량연구과) ;
  • 임경재 (강원대학교 지역건설공학과)
  • Received : 2014.06.21
  • Accepted : 2014.08.25
  • Published : 2014.08.31
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Abstract

The objectives of study are 1) to enhance the filed scale BMPs model of HRSM4BMP for simulation of watershed scale and 2) to evaluate the enhanced HRSM4BMP model. Thus pre-process and post-process module were developed and HRSM4BMP was linked to SWAT routing module. After enhancement of model, enhanced HRSM4BMP model was applied to Heaan watershed in Kangwon province with Vegetative filter strip (2 m) in subwatershed #14 and reduction of sediment load was evaluated by watershed scale in outlet. The results of simulation, sediment load was reduced by 4 percent during 3 years in outlet. The result of this study is expected to be used Long-term BMPs establishing plan in South Korea.

본 연구의 목적은 필지 단위 최적관리기법 적용 효과를 분석할 수 있는 HRSM4BMP 모형을 유역단위로 모의할 수 있도록 모형을 개선하는 것이며 이를 실제 유역에 적용하여 평가하는 것이다. 따라서 HRSM4BMP 모형을 유역단위로 모의할 수 있도록 하기 위해 전처리 프로세서와 후처리 프로세서 모듈을 개발하였고 유역단위 유출량 및 유사량 모의에 많이 사용되고 있는 SWAT모형의 하천 하도추적과정과 HRSM4BMP 모형을 연계하였다. 이렇게 개선된 HRSM4BMP 모형을 강원도 양구군 해안면 유역 내 14번 소유역에 2 m의 초생대 최적관리기법 적용에 따른 유역단위 저감효과를 모의하였다. 그 결과, 14번 소유역에서는 약 280 ton (5%)의 유사가 저감되었으며 유역 말단인 43번 소유역에서 초생대 적용 후 약 223 ton (4%)의 저감 효과가 있는 것으로 분석되었다. 본 연구의 결과는 향후 우리나라 유역단위 BMPs 설치 장기 계획에 있어 매우 유용하게 사용될 수 있을 것이라 판단된다.

Keywords

References

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