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http://dx.doi.org/10.3741/JKWRA.2012.45.1.65

The Effect of Decentralized Rainwater Tank System on the Reduction of Peak Runoff - A Case Study at M Village -  

Han, Moo-Young (Dept. of Civil and Environment Eng., Seoul National Univ.)
Kum, So-Yoon (Dept. of Civil and Environment Eng., Seoul National Univ.)
Mun, Jung-Soo (Water Resources & Environment Research Dept., Korea Institute of Construction Technology)
Kwak, Dong-Geun (Water & Environment Division, Posco E&C)
Publication Information
Journal of Korea Water Resources Association / v.45, no.1, 2012 , pp. 65-73 More about this Journal
Abstract
Recently climate change and increase of surface runoff caused the urban flooding. Traditional way of dealing with urban flooding has been to increase the sewer capacity or construction of pumping stations, however, it is practically almost impossible because of time, money and traffic problems. Multipurpose DRMS (Decentralized Rainwater Management System) is a new paradigm proposed and recommended by NEMA (National Emergency Management Agency) for both flood control and water conservation. Suwon City has already enacted the ordinance on sound water cycle management by DRMS. In this study, a flood prone area in Suwon is selected and analysis of DRMS has been made using XP-SWMM for different scenarios of RT installation with same total rainwater tank volume and location. Installing one rainwater tank of 3,000$m^3$ can reduce the peak flow rate by 15.5%. Installing six rainwater tanks of 500$m^3$ volume in the area can reduce the peak flow rate by 28%. Three tanks which is concentrated in the middle region can reduce peak rate more than evenly distributed tanks. The method and results found from this study can be used for the design and performance prediction of DRMS at a flood prone area by supplementing the existing sewer system without increase of the sewer capacity.
Keywords
Climate change; Multipurpose Decentralized Rainwater Management System (MDRMS); Decentralized Rainwater Management System (DRMS); rainwater tank; Peak flow rate reduction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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