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http://dx.doi.org/10.3741/JKWRA.2011.44.1.31

Analysis for the Effectiveness of Sedimentation Reduction Using the Channel Contraction Method at the Estuary Barrage  

Ji, Un (Dept. of Civil and Environmental, Engrg., Myongji Univ.)
Kim, Gwon-Han (Dept. of Civil and Environmental, Engrg., Myongji Univ.)
Yeo, Woon-Kwang (Dept. of Civil and Environmental, Engrg., Myongji Univ.)
Publication Information
Journal of Korea Water Resources Association / v.44, no.1, 2011 , pp. 31-40 More about this Journal
Abstract
In this study, the methods of sedimentation reduction for the estuary barrage were analyzed using the CCHE2D bed change model. Especially, the effectiveness of sediment dredging currently applied in the field was evaluated quantitatively and also the channel contraction method which is a substitute method was analyzed for the Nakdong River Estuary Barrage (NREB). The numerical model was calibrated and validated for the sediment transport equations and transport modes. In the NREB case, the Ackers and White formula and bed load type was the most similar to the field condition. As a results of the dredging simulation, there was the sedimentation reduction effect of 0.2 m in the bed changes. Furthermore, the analysis result of the channel contraction method represented that the sedimentation reduction effects of the average 0.4 m and the maximum 2.0 m were produced.
Keywords
nakdong river estuary barrage; CCHE2D model; sediment reduction; numerical modeling; dredging effect; channel contration;
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Times Cited By KSCI : 1  (Citation Analysis)
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