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http://dx.doi.org/10.5762/KAIS.2014.15.1.495

Numerical Model Application for Analysis of Flood Level Mitigation due to Retention-Basin  

Cho, Gilje (River and Coastal Research Division, Korea Institute of Construction Technology)
Rhee, Dong Sop (River and Coastal Research Division, Korea Institute of Construction Technology)
Kim, Hyung-Jun (River and Coastal Research Division, Korea Institute of Construction Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.15, no.1, 2014 , pp. 495-505 More about this Journal
Abstract
The retention basin is a river-facility for the flood mitigation by storing the river flow temporarily. The new 3 retention basins are installed in these regions YeoJu, NaJu, YoungWol by the Large River Management Project. In this study, 1D and 2D numerical flow simulation are conducted to evaluate the reduction effect of the peak flood stage for the YeoJu retention basin. HEC-RAS and FLDWAV models are used for 1D simulation with the option of retention basin. CCHE2D model is used for 2D simulation with the same hydrograph used in 1D simulation. It is verified that the peak flood stage is reduced very largely about 0.13 m near the overtopping section of the levee in 1D simulation. It is verified that the peak flood stage is reduced very largely about 0.20 m at the upstream-end of the simulated reach in 2D simulation. 2D simulation for the retention basin is more reasonable because physical characteristics of topography in the model, and also more advantageous for the evaluation of the flow characteristics of the in- and outside of the retention basin on the results of simulation of this study.
Keywords
Retention basin; Overtopping levee; Side weir; Flood mitigation;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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