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http://dx.doi.org/10.3741/JKWRA.2018.51.4.301

A study of Spatial Multi-Criteria Decision Making for optimal flood defense measures considering regional characteristic  

Lee, Eunkyung (Department of Civil and Transportation Engineering, Ajou University)
Ji, Jungwon (Department of Civil and Transportation Engineering, Ajou University)
Yi, Jaeeung (Department of Civil Systems Engineering, Ajou University)
Publication Information
Journal of Korea Water Resources Association / v.51, no.4, 2018 , pp. 301-311 More about this Journal
Abstract
Recently, the flood inundation caused by heavy rainfall in urban area is increasing due to global warming. The variability of climate change is described in the IPCC 5th report (2014). The precipitation pattern and hydrological system is varied by climate change. Since the heavy rainfall surpassed the design capacity of the pipeline, it caused great damage in metropolitan cities such as Seoul and Busan. Inundation in urban area is primarily caused by insufficient sewer capacity and surplus overflow of river. Inundation in urban area with concentrated population is more dangerous than rural and mountains areas, because it is accompanied by human casualties as well as socio-economic damage to recover destruction of roads, brides and underground spaces. In addition, various factors such as an increase in impervious area, a short time of concentration to outlet, and a shortage of sewer capacity's lack increase flooding damage. In this study, flood inundation analysis was conducted for vulnerable areas using XP-SWMM. Also, three structural flood prevention measures such as drainage pipeline construction, detention reservoir construction, and flood pumping station construction are applied as flood damage prevention alternatives. The flood data for each alternative were extracted by dividing the basin by grid. The Spatial Compromise Programming are applied using flood assessment criteria, such as maximum inundation depth, inundation time, and construction cost. The purpose of this study is to reflect the preference of alternatives according to geographical condition even in the same watershed and to select flood defense alternative considering regional characteristics.
Keywords
Urban flood defense; Flood inundation analyze; Spatial Multi-Criteria Decision Making;
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Times Cited By KSCI : 5  (Citation Analysis)
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