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http://dx.doi.org/10.3741/JKWRA.2018.51.3.183

Channel-forming discharge calculation and stable channel section evaluation for downstream reach of Yeongju dam in Naesung stream  

Jang, Eun-Kyung (Department of Civil and Environmental Engineering, Colorado State University)
Ahn, Myeonghui (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Ji, Un (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korea Water Resources Association / v.51, no.3, 2018 , pp. 183-193 More about this Journal
Abstract
Channel-forming discharge for downstream section of Yeongju dam in Naesung stream was calculated to analyze stable channel geometry. Determined channel-forming discharge was applied to design stable channel slope, depth, and base width at Yonghyeol station. Used data for channel-forming discharge and stable channel analysis were collected in downstream section of Yeongju dam in Naesung stream before the dam construction. Specified recurrence interval discharge, effective discharge, and bankfull discharge were analyzed and compared to decide final channel-forming discharge which was $260m^3/s$ of bankfull discharge. Stable channel analysis and design program was applied to predict stable channel section of width, depth, and slope with various sediment transport equations of Ackers and White, Brownlie, Engelund and Hansen, and Yang's equations. As a result, all equations of sediment transport produced milder slopes compared to current bed slope of 0.00177 and Ackers and White equation presented the most similar flow depth of current section with the design constraint of current channel width.
Keywords
Bankfull discharge; Channel-forming discharge; Naesung stream; Sediment transport equation; Stable channel design;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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