Stable channel design with different sediment transport equations and geomorphologic constraints in Cheongmi stream

A program for stable channel design was developed to perform the sensitivity analysis for stable conditions with various sediment transport equations. It provides a useful solution considering design constraints such as a fixed width and depth as well as various solutions for stable channel conditio...

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Bibliographic Details
Published in:KSCE journal of civil engineering 2016, 20(5), , pp.2041-2049
Main Authors: Jang, Eun-Kyung, Ji, Un, Kim, Kyu-Ho, Yeo, Woon Kwang
Format: Article
Language:English
Subjects:
Civil Engineering
Depth
Design
Engineering
Equations
Geomorphology
Geotechnical Engineering & Applied Earth Sciences
Industrial Pollution Prevention
Mathematical analysis
Restoration
Rivers
Sand bars
Sediment
Sediment transport
Sensitivity analysis
Slope
Stable channels
Transport equations
Water Engineering
Width
토목공학
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Summary:A program for stable channel design was developed to perform the sensitivity analysis for stable conditions with various sediment transport equations. It provides a useful solution considering design constraints such as a fixed width and depth as well as various solutions for stable channel condition with a wide range. This program applied to the section of the abandoned channel restoration in the Cheongmi Stream, a tributary of Han River in Korea. The predicted slopes with sediment transport equations were steeper than the current channel slope. Overall, the current section has deeper depth and milder bed slope compared to the stable channel prediction results. This could be represented in relation to the formation of sandbars around the study reach in the Cheongmi Stream. Regarding the application to the Cheongmi Stream with the fixed base width, Yang’s equation produced the steepest slope and the shallowest depth. In the case of the application with the fixed depth, the base width predicted by Yang’s equation was the narrowest. For all sediment transport equations, the predicted base width was narrower than the current section.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-015-0126-5