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http://dx.doi.org/10.14481/jkges.2019.20.1.57

An Experimental Study on Cylindrical Countermeasures for Dissipation of Debris Flow Energy  

Kim, Beom-Jun (Department of Civil Engineering, Gangneung Wonju National University)
Han, Kwang-Do (Department of Water Resources, ISAN Corporation)
Kim, Ho-Seop (Department of Research Institute, ISAN Corporation)
Choi, Clarence E. (Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology)
Yune, Chan-Young (Department of Civil Engineering, Gangneung Wonju National University)
Publication Information
Journal of the Korean GEO-environmental Society / v.20, no.1, 2019 , pp. 57-65 More about this Journal
Abstract
In this study, to investigate the effect of cylindrical countermeasure on the flow characteristics of debris flow, a series of small-scale tests were conducted using a flume with cylindrical baffles. Various heights and row numbers of installed baffles were considered as a test condition. High speed cameras and laser level sensors were also installed at the top and side of the channel, respectively, to capture the debris flow dynamics before and after baffles. Based on test results, the energy dissipation of debris flow due to baffles was analyzed. Test results showed that baffles can significantly reduce the velocity and flow depth of debris flows. The energy dissipation effect of baffles also increase as the increase of height and row number of baffles.
Keywords
Debris flow; Cylindrical baffles; Baffle height; Number of rows; Velocity; Flow depth;
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