Journal of Wetlands Research (한국습지학회지)
- Volume 7 Issue 3
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- Pages.57-66
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- 2005
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- 1229-6031(pISSN)
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- 2384-0056(eISSN)
Determination of Optimal Unit Hydrographs and Infiltration Rate Functions at the site of the Su-Jik Bridge in the HwangGuJichen River
황구지천 수직교 지점에서의 최적 단위도 및 침투율의 결정
- Ahn, Taejin (Dept. of Civil Engrg., Hankyong National Univ.) ;
- Cho, Byung Doon (LiChun city government) ;
- Lyu, Heui Jeong (Dept. of Civil Engrg., Hankyong National Univ.)
- Published : 2005.09.30
Abstract
This paper is to present the determination of the optimal loss rate parameters and unit hydrographs from the observed single rainfall-runoff event using optimization model. The linear program models has been formulated to derive the optimal unit hydrographs and loss rate parameters for the site of the Su-Jik Bridge in the HwangGuJichen River; one minimizes the summation of the absolute residual between predicted and observed runoff ordinates. In the perturbation stage of parameters the trial and error method has been adopted to determine the loss rate parameters for Kostiakov's, Philip's, Horton's, and Green-Ampt's equation. The unique unit hydrograph ordinates for a given rainfall-runoff event is exclusively obtained with
본 연구는 최적화모형을 이용하여 관측된 단일 강우-유출 사상으로부터 최적단위도와 침투율 공식의 매개변수를 결정하였다. 단일 강우-유출사상으로부터 절대오차누계를 최소로 하는 선형계획모형을 정립하고, 황구지천 수직교 지점에서의 최적침투율과 단위도를 결정하였다. 침투율 공식의 섭동 단계에서는 시산법을 적용하여 Kostiakov, Philip, Horton 및 Green-Ampt 공식의 매개변수를 결정하였다.
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