Japan Society of Civil Engineers 2020 Annual Meeting

Presentation information

第II部門

河川計画・管理

Chair:Kosuke Tabata

[II-163] Estimaiton of Foremation Avoidance Topograpy on Dynamic Equilibrium State of Bed

〇Kaori ISHIZUKA1, Kotaro Umeki1, Michihide Ishihara1, Takumi Igarashi2, Hiroyasu Yasuda1 (1.Niigata Univerciy, 2.kitac)

Keywords:sand bar, bank erosion, erosional failure of bank, river management

Bank erosion is typical failure in gravel bed rivers. We have developed an prediction method of bank erosion point due to uneven distribution of flood flow using tractive force. However, the method is based on physical model that is not neglect any uncertainly. In this study, we try to combine new prediction method focusing on river bed shape with the previous method using flume experiment and numerical simulation of actual river. We showed that both prediction methods can estimate bank erosion point well.

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