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http://dx.doi.org/10.17820/eri.2015.2.1.042

Changes in Channel Geomorphology and Hydraulics by Submerged Spur Dikes at a Channelized Stream  

Kim, Kiheung (Department of Civil Engineering, Gyeongnam National University of Science and Technology)
Lee, Hyeongrae (Department of Civil Engineering, Gyeongnam National University of Science and Technology)
Jung, Heareyn (Department of Civil Engineering, Gyeongnam National University of Science and Technology)
Publication Information
Ecology and Resilient Infrastructure / v.2, no.1, 2015 , pp. 42-53 More about this Journal
Abstract
In order to assess the hydraulic effects of flow pattern changes and geomorphological evolution around spur dikes, this study carried out monitoring and numerical simulation on the changes of morphologic characteristics around spur dikes that settled in the bend of the Yeongcheon River. The study site spanned 190 m, and spur dikes were installed in March 2008. Monitoring of the site started in May 2008 and was completed in April 2014. When the water level was higher than the height of the spur dikes, the spur dikes extrude flow from the bank. Therefore, the spur dikes that were built to stabilize the channel have been effectively performing hydraulic functions. With the passing of time, the channel was stabilized and pools formed around the spur dike toes by local scouring. It was confirmed that spur dikes created various physical characteristics in the aspect of channel topography, with sediments deposits occurring between the spur dikes, while riffles and pools formed in the channel.
Keywords
Bank; Geomorphology; Numerical simulation; Sediment; Stream channel;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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