Author(s): Shingo Otaka; Yasuharu Watanabe; Takahiro Ito; Hiroki Watabe
Linked Author(s): Yasuharu Watanabe
Keywords: No keywords
Abstract: The accumulation of driftwood in the river channel is one of the causes of disasters. Therefore, elucidation of the behavior of driftwood, the position of sedimentation, and the behavior of re-location of driftwood accumulated in river channels is an important issue for planning disaster countermeasures. A large flood exceeding the design discharge caused by 4 consecutive typhoons and fronts attacked the Tottabetsu River basin in August 2016. At that time, it was confirmed that a large amount of driftwood flowed down and accumulated in the river channel. After the flood, the location of driftwood and the specifications of the driftwood were investigated in detail. Based on the survey results, a hydraulic model experiment with movable bed was conducted, and the accumulation characteristics and re-movement characteristics of driftwood were analyzed from the experimental results.
Year: 2022