THE EFFECT OF SOIL OF LEVEE AND LANDSIDE WATER ON LEVEE BREACH PROCESSES

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  • 堤体材料および内水状況が越水堤防決壊現象に与える影響

Abstract

<p> In August 2016, during the heavy rain in Hokkaido, overflowing in the Tokoro River section under the jurisdiction, seven embankments were confirmed but one site was destroyed. It is also important to clarify factors that did not lead to the collapse despite overflowing, in considering damage mitigation techniques. In order to analyze these factors, we conducted an experiment focusing on soil and landside water. The results of the experiments are as follows: It was shown that when the surface coverage was applied to the gravel embankment with clay, the time from the overshoot to the collapse was long, but in the widening process there was no difference from the gravel embankment.</p>

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