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http://dx.doi.org/10.3741/JKWRA.2003.36.3.385

A Study on Determination of Capacity for Pump and Detention Pond in Small Basins for Flood Control  

Ahn, Tae-Jin (Dept. of Civil Engrg., Hankyong National Univ.)
Park, Jong-Yoon (Disaster Prevention Standard Office, Ministry of Government Administration and Home Affairs)
Lyu, Heui-Jeong (Dept. of Civil Engrg., Hankyong National Univ.)
Kim, Joong-Hoon (Dept. of Civil and Environmental Engrg., Korea Univ.)
Publication Information
Journal of Korea Water Resources Association / v.36, no.3, 2003 , pp. 385-398 More about this Journal
Abstract
The concept of the effective storage ratio has been suggested to determine the size of detention pond by the previous researchers. The 11 pump - pond facilities in Dongdu-chun city were selected to analyze the critical duration for design rainfall and the storage ratio for each rainfall duration in this study It has been then found that the criteria of the maximum storage ratio is not reasonable for determining the size of detention pond because the difference of storage ratio with respect to each rainfall duration is too small. Moreover, since the size of pond compared with the pump capacity is not always big enough, the pump should be frequently operated, which may result in pump failure. Thus, the pond should be sufficiently sized to prevent the possibility of the pump failure due to frequent operation. According to the analyses for changing pump capacity, it has been found that if the function of the pond compared with the pump is concentrated, determining the size of pond based on the storage ratio is operationally feasible for even small basin. Thus, an improved procedure based on the storage ratio for determining the size of detention pond in small basin has been suggested. The results by the proposed procedure considering pump switching frequency may lead to reasonable pump operation. A simple linear programming model has been also adopted to figure out the relationship between pump capacity and pond size. It has been shown that the determination lot the size of detention pond based on conventional hydrologic flood routing in pond is feasible for only urban districts not rural areas.
Keywords
pump; detention pond; critical duration; maximum storage ratio; pump switching frequency;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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