EXPERIMENTS ON PROCESS OF RIVER LEVEE BREACH AND BED EROSION

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  • 堤防決壊プロセスと同時発生する河床変動に関わる移動床実験

Abstract

<p> Recently, record breaking heavy rain have continued one after another due to the extreme weather conditions, causing enormous inundation damage throughout the country. Levee breach is one of the disasters that causes a great amount of flood damage, as in the case of Typhoon No. 19 that occurred in 2019. Therefore, it can be said that elucidating the mechanism is important for disaster prevention. So far, the authors have examined the simulated levee composed of clay, sand, and gravel by basic experiments for storage of water in a river. At that time, we have examined the effect of clay and gravel on the breach mechanism by changing the respective content ratios. In this study, the influence of the river flow on the levee breach process is examined by conducting a levee breach simulation.</p>

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