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THE APPLICABILITY OF OPEN-SLOT GROUNDSILLS IN TRAINED RIVER TO ENCOURAGE THE FORMATION OF MEANDERING

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  701P0904,  . (doi: 10.13031/2013.17395)
Authors:   C.-C. Wu, J.-J. Lin, Y.-C. Lin, C.-M. Yeh
Keywords:   Groundsills, Meandering, Sinuosity, River training

The objective of this research is to experimentally assess the applicability of open-slot groundsills in trained streams to encourage the formation of meandering. Mechanics of meander formation as well as the sinuosity index in the settings of serial open-slot groundsills at different channel gradients, sediment diameters, offset-interval ratios, and flow discharges is discussed. Selective sediment transport as well as deposition occurred on the outskirts of thalweg and floodplain was observed after the installation of open-slot groundsills. Both processes encourage the formation of alternate bars and meanders, which result in greater diversity in trained streams.

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