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http://dx.doi.org/10.3741/JKWRA.2016.49.6.519

Sewer overflow simulation evaluation of urban runoff model according to detailed terrain scale  

Tak, Yong Hun (Dept. of Environmental Engineering, Inje University)
Kim, Young Do (Dept. of Environmental Engineering(Nakdong River Environmental Research Center), Inje University)
Kang, Boosik (Dept. of Civil and Environmental Engineering, Dankook University)
Park, Mun Hyun (Dept. of Environment Water Resource, Dongbu Engineering)
Publication Information
Journal of Korea Water Resources Association / v.49, no.6, 2016 , pp. 519-528 More about this Journal
Abstract
Frequently torrential rain is occurred by climate change and urbanization. Urban is formed with road, residential and underground area. Without detailed topographic flooded analysis consideration can take a result which are wrong flooded depth and flooded area. Especially, flood analysis error of population and assets in dense downtown is causing a big problem for establishments and disaster response of flood measures. It can lead to casualties and property damage. Urban flood analysis is divided into sewer flow analysis and surface inundation analysis. Accuracy is very important point of these analysis. In this study, to confirm the effects of the elevation data precision in the process of flooded analysis were studied using 10m DEM, LiDAR data and 1:1,000 digital map. Study area is Dorim-stream basin in the Darim drainage basin, Sinrim 3 drainage basin, Sinrim 4 drainage basin. Flooding simulation through 2010's heavy rain by using XP-SWMM. Result, from 10m DEM, shows wrong flood depth which is more than 1m. In particular, some of the overflow manhole is not seen occurrence. Accordingly, detailed surface data is very important factor and it should be very careful when using the 10m DEM.
Keywords
DEM; LiDAR; Flooded analysis; XP-SWMM;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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