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http://dx.doi.org/10.5762/KAIS.2015.16.10.7089

Long-term Bed Change Analysis and Equilibrium Bed Elevation Prediction after Weir Construction in Nakdong River  

Ji, Un (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Jang, Eun-Kyung (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Kim, Won (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.10, 2015 , pp. 7089-7097 More about this Journal
Abstract
Bed changes in the Nakdong River were analyzed with long-term monitoring data for analyzing riverbed change patterns after Four Major Rivers Restoration Project (FMRRP). Also, possible long-term bed changes were predicted using one-dimensional numerical model for the section where the largest change was observed after FMRRP. The sensitive analysis was performed with different incoming sediment discharge conditions and sediment transport equations. The numerical model was calibrated by comparing short-term monitoring data and simulated results, and was applied for predicting bed change after 10 years. As a result of monitoring data analysis, the largest change in bed elevation occurred at the section between the Changnyeong-Haman and Hapcheon-Changnyeong weirs. The result of one-dimensional numerical modeling for 10 years indicated that maximum depositions of 2.07 m and 3.26 m were produced in this section.
Keywords
One-dimensional Numerical Model; Bed Change; Four Major Rivers Restoration Project; Monitoring Data Analysis; Nakdong River;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 U. Ji, W. K. Yeo and S. W. Han, "Numerical Analysis for Bed Change due to Sediment Transport Capacity Formulas and Sediment Transport modes at the Upstream Approached Channel of the Nakdong River Estuary Barrage", Journal of Korea Water Resources Association, Vol. 43, No. 6, pp. 543-557, 2010. DOI: http://dx.doi.org/10.3741/JKWRA.2010.43.6.543   DOI
2 B. M. Duc, T. Wenka and W. Rodi, "Numerical Modeling of Bed Deformation in Laboratory Channels", Journal of Hydraulic Engineering, No. 130, pp. 894-904, 2014. DOI: http://dx.doi.org/10.1061/(ASCE)0733-9429(2004)130:9(894)   DOI
3 J. Huang, B. Greimann and C. T. Yang, "Numerical Simulation of Sediment Transport in Alluvial River with Flood plains", International Journal of Sediment Research, Vol. 18, No. 1, pp. 50-59, 2003.
4 MLIT, River master plan report (modified) of Nakdong river basin, Ministry of Land, Infrastructure and Transport, 2009.
5 WAMIS, Water Resources Management Information System, http://www.wamis.go.kr
6 P. Ackers and W. R. White, "Sediment transport: A new approach and analysis", Journal of Hydraulics Division, ASCE, Vol. 99, No. 11, pp. 2041-2060, 1973.
7 F. Engelund and E. E. Hansen, "A monograph of sediment transport in alluvial rivers", Technical University of Denmark, Copenhagen, pp. 62, 1967.
8 C. T. Yang, "Incipient motion and sediment transport", Journal of Hydraulics Division, ASCE, Vol. 99, No. 10, pp. 1679-1704, 1973.
9 H. W. Shen and C. S. Hung, "An Engineering approach to total bed-material load by regression analysis", Completion Report, 17p, 1969.
10 W. R. Brownlie, "Prediction of flow depth and sediment transport in open channels", Report No. KH-R-43A, Institute of Technology, California, 1981.
11 H. W. Shen and C. S. Hung, "Remodified Einstein Procedure for Sediment Load" Journal of Hydraulics Division, ASCE, Vol. 190, No. HY4, 1983. DOI: http://dx.doi.org/10.1061/(asce)0733-9429(1983)109:4(565)   DOI
12 USACE, "HEC-RAS River Analysis System-Hydraulic Reference Manual", US Army Corps of Engineers, Hydrologic Engineering Center, 2010.