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http://dx.doi.org/10.5762/KAIS.2017.18.12.712

Experimental Study on Stability of Revetment on Inland Slope of River Levee for Prevention of Failure due to Overtopping  

Kim, Sooyoung (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Yoon, Kwang Seok (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.12, 2017 , pp. 712-721 More about this Journal
Abstract
Recently, the intensity and frequency of floods has increasing worldwide, and flood disasters have become a big problem. Flood disasters, which account for the largest portion of disasters, are floods accompanied by typhoons and localized heavy rainfall. As a result, they cause damage of levee overtopping, in which the water level of a river rises to the levee crown. Therefore, countermeasures are essential and necessary because of the damage to the facility itself as well as to life and other property. The damage magnitude depends on the collapse of the levee. A levee that is difficult to collapse will reduce the discharge inland significantly. Accordingly, the protection of the inland slope, where the collapse of the levee is initiated, is one of the most important countermeasures In this study, revetments with various porosity and forms were suggested and hydraulic experiments were carried out for each type. The hydraulic experiments showed that the stability of a revetment in an inland slope is strongly correlated with the weight per unit area of the revetment. The relationship between the critical velocity, which is the velocity at the moment of leaving the revetment, and the weight per unit area was derived. Through this study, by applying the nature friendly revetment, which has not yet been applied to Korea, it is expected that life and property damage caused by levee overtopping during flooding can be reduced, and a nature friendly river space can be constructed.
Keywords
Inland slope revetment; Levee overtopping; Porosity; Critical velocity; Hydraulic experiment;
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