Japanese Journal of JSCE
Online ISSN : 2436-6021
Special Issue (Global Environment Engineering)Paper
INTERACTIONS BETWEEN VEGETATION AND DRIFTWOOD ON FLOOD FLOWS
Noritoshi SAITOKazuya WATANABESoshi OOMORIYoshitaka JIKEN
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2023 Volume 79 Issue 27 Article ID: 23-27043

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Abstract

 The combined effects of increased river flow due to heavy rainfall, vegetation in the river channel, and driftwood have increased the damage caused by floods. However, the interaction of vegetation and driftwood during floods has not been studied. In this study, hydraulic model experiments were conducted to understand the behavior of driftwood in the presence of vegetation, and the relationship between the density of vegetation and the length of driftwood. The results showed that the rate of driftwood accumulation and the rate of water level rise during floods decreased as the length of driftwood became shorter and the density of vegetation became smaller.

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© 2023 Japan Society of Civil Engineers
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