Authors

Kim Tran Thi 1 , Diem Phung Thi My 1 , Huy Nguyen Dam Quoc 2 , Tai Pham Anh 3,4 , Phung Nguyen Ky 1 , Bay Nguyen Thi 3,4*

Affiliations

1 Ho Chi Minh City University of Natural resources and Environment, 236B Le Van Sy Street, Ward 1, Tan Binh District, Ho Chi Minh City; ttkim@hcmunre.edu.vn; diemptm@hcmunre.edu.vn; kyphungng@gmail.com

2 Institute of Coastal and Offshore Engineering, Vietnam, 658 Vo Van Kiet, Ward 1, District 5, Ho Chi Minh City, Vietnam; damquochuy71@gmail.com

3 University of Technology Ho Chi Minh City, Vietnam, 268 Ly Thuong Kiet Street, Ward 14, District 10, Ho Chi Minh City; phamanhtai0410@gmail.com; ntbay@hcmut.edu.vn

4 Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam; phamanhtai0410@gmail.com; ntbay@hcmut.edu.vn

*Correspondence: ntbay@hcmut.edu.vn; Tel.: +84–902698585

Abstracts

Riverbank erosion is a common occurrence in rivers worldwide, leading to significant impacts on shoreline protection and the lives of people residing in affected areas. Scientists, experts, and engineers have devoted considerable attention to study this phenomenon to better understand and predict the damage caused by riverbank failures. In the paper, we propose a mathematical model that combines bottom erosion and riverbank failure mechanisms. The model incorporates high-performance GPUs (Graphics Processing Units) to enhance its computational efficiency and capability. It utilizes a set of equations, such as the Reynolds equations, sediment transport equations, and bed load continuity equation, to simulate the dynamics of flow, sediment transport, and changes in the riverbed. Additionally, the model incorporates the calculation of riverbank failure using the rotational failure mechanism and determines the factor of safety (FS) to assess the stability of riverbanks and the bank failure (BW). If the FS value is less than 1, it indicates that the bank is prone to failure, and such instances are recorded. To evaluate the model's reliability, a case study is conducted on a specific segment of the Tien River in Sa Dec City, Dong Thap Province. This model serves as a crucial tool for socioeconomic planning and implementing effective measures to prevent and mitigate the impacts of riverbank failure in the local area.

Keywords

Bed erosion; Factor of safety; Rotational failure; River instability; Riverbank failure.

Cite this paper

Kim, T.T.; Diem, P.T.M.; Huy, N.D.Q.; Tai, P.A.; Phung, N.K.; Phung, N.K.; Bay, N.T. A riverbank failure model: A case study for the segment of Tien River flowing through Sadec, Vietnam. J. Hydro-Meteorol. 2023, 16, 1-22. 

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