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http://dx.doi.org/10.5762/KAIS.2018.19.2.1

Analysis of Breach Mitigation Effect on Levee made with New Substance by Overtopping  

Ko, Dong-Woo (River Experiment Center, Korea Institute of Civil Engineering and Building Technology)
Kang, Joon-Gu (River Experiment Center, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.19, no.2, 2018 , pp. 1-8 More about this Journal
Abstract
Levee breaches can result from flooding due to torrential rainfalls, which are linked with recent abnormal climates and the aging of river levees. Breaches have caused enormous property damage and human casualties in lowland areas. Overtopping was found to be the cause for approximately 40% of all cases of breach. In this study, the reasons and mechanisms behind levee breaches were analyzed using hydraulic model testing. The overtopping stability and time delay effect of breaches were assessed for levees made with a new environmentally friendly substance. Image analysis revealed that the total breach time of the levees made with the new substance was about 2.25 times greater than that of an earthen levee. The initial breach rate of a general earthen levee was about 1.43 times higher than that of levees covered with the new substance, and the body collapsed rapidly. The breach mechanisms of levees covered with the new substance were completely different, and it is possible to prevent rapid breaches by mitigation of the breach speed on the slope by resisting overtopping.
Keywords
Hydraulic model; Image analysis; Levee breach; New substance; Overtopping;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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