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논문 기본 정보

자료유형
학술저널
저자정보
Lee, Jong-Tae (Department of Civil Engineering, Kyonggi University) Yoon, Sei-Eui (Department of Civil Engineering, Kyonggi University) Lee, Jae-Joon (Kumoh National University of Technology, Kumi, Kyung-Buk)
저널정보
한국수자원학회 Korean journal of hydrosciences Korean journal of hydrosciences 제5권
발행연도
1994.1
수록면
33 - 43 (11page)

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This study is to determine the critical duration of design rainfall and to utilize it for the design of detention pond with pump station. To examine the effect of the duration and temporal distribytion of the design rainfall, Huff's quartile method is used for the 9 cases of durations (ranges from 20 to 240 minutes) with ten years return period, and the ILLUDAS model is used for runoff analysis. The storage ratio, which is the ratio of maximum storage amounts to total runoff volume, is introduced to determine the criticalduration of design rainfall. The duration which maximizes the storage ratio is adopted as the critical duration. This study is applied to 18 urban drainage watercheds with pump station in Seoul, of which the range of watershed area is 0.24~12.70$km^2$. The result of simulation shows that the duration which maximizes storage ratio is 30 and 60 minutes on the whole. It is also shown that the storage ratios of 2nd - and 3rd-quartile pattern are larger than those of 1st- and 4th-quartile pattern of temporal distribution. A simplified empirical formula for Seoul area is suggested by the regression analysis between the maximum storage ratio and the peak ratio. This formula can be utilized for the preliminary design and planning of detention pond with pump station.

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