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Embankment Dams Overtopping Breach: A Numerical Investigation of Hydraulic Results
https://orcid.org/http://orcid.org/0000-0002-6986-7388
https://orcid.org/http://orcid.org/0000-0001-7194-9393
https://orcid.org/http://orcid.org/0000-0002-2049-9676
https://orcid.org/http://orcid.org/0000-0003-0099-4474
The overtopping breach is the most probable reason of embankment dam failures. Hence, the investigation of the mentioned phenomenon is one of the vital hydraulic issues. This research paper tries to utilize three numerical models, i.e., BREACH, HEC-RAS, and FLOW-3D for modeling the hydraulic outcomes of overtopping breach phenomenon. Furthermore, the outputs have been compared with experimental model results given by authors. The BREACH model presents a desired prediction for the peak flow. The HEC-RAS model has a more realistic performance in terms of the peak flow prediction, its occurrence time (5-s difference with observed status), and maximum flow depth. The variations diagram in the reservoir water level during the breach process has a descending trend. Whereas it initially ascended; and then, it experienced a descending trend in the observed status. The FLOW-3D model computes the flow depth, flow velocity, and Froude number due to the physical model breach. Moreover, it revealed a peak flow damping equals to 5% and 5-s difference in the peak flow occurrence time at 4-m distance from the physical model downstream. In addition, the current research work demonstrates the mentioned numerical models and provides a possible comprehensive perspective for a dam breach scope. They also help to achieve the various hydraulic parameters computations. Besides, they may calculate unmeasured parameters using the experimental data.
Embankment Dams Overtopping Breach: A Numerical Investigation of Hydraulic Results
https://orcid.org/http://orcid.org/0000-0002-6986-7388
https://orcid.org/http://orcid.org/0000-0001-7194-9393
https://orcid.org/http://orcid.org/0000-0002-2049-9676
https://orcid.org/http://orcid.org/0000-0003-0099-4474
The overtopping breach is the most probable reason of embankment dam failures. Hence, the investigation of the mentioned phenomenon is one of the vital hydraulic issues. This research paper tries to utilize three numerical models, i.e., BREACH, HEC-RAS, and FLOW-3D for modeling the hydraulic outcomes of overtopping breach phenomenon. Furthermore, the outputs have been compared with experimental model results given by authors. The BREACH model presents a desired prediction for the peak flow. The HEC-RAS model has a more realistic performance in terms of the peak flow prediction, its occurrence time (5-s difference with observed status), and maximum flow depth. The variations diagram in the reservoir water level during the breach process has a descending trend. Whereas it initially ascended; and then, it experienced a descending trend in the observed status. The FLOW-3D model computes the flow depth, flow velocity, and Froude number due to the physical model breach. Moreover, it revealed a peak flow damping equals to 5% and 5-s difference in the peak flow occurrence time at 4-m distance from the physical model downstream. In addition, the current research work demonstrates the mentioned numerical models and provides a possible comprehensive perspective for a dam breach scope. They also help to achieve the various hydraulic parameters computations. Besides, they may calculate unmeasured parameters using the experimental data.
Embankment Dams Overtopping Breach: A Numerical Investigation of Hydraulic Results
https://orcid.org/http://orcid.org/0000-0002-6986-7388
https://orcid.org/http://orcid.org/0000-0001-7194-9393
https://orcid.org/http://orcid.org/0000-0002-2049-9676
https://orcid.org/http://orcid.org/0000-0003-0099-4474
The overtopping breach is the most probable reason of embankment dam failures. Hence, the investigation of the mentioned phenomenon is one of the vital hydraulic issues. This research paper tries to utilize three numerical models, i.e., BREACH, HEC-RAS, and FLOW-3D for modeling the hydraulic outcomes of overtopping breach phenomenon. Furthermore, the outputs have been compared with experimental model results given by authors. The BREACH model presents a desired prediction for the peak flow. The HEC-RAS model has a more realistic performance in terms of the peak flow prediction, its occurrence time (5-s difference with observed status), and maximum flow depth. The variations diagram in the reservoir water level during the breach process has a descending trend. Whereas it initially ascended; and then, it experienced a descending trend in the observed status. The FLOW-3D model computes the flow depth, flow velocity, and Froude number due to the physical model breach. Moreover, it revealed a peak flow damping equals to 5% and 5-s difference in the peak flow occurrence time at 4-m distance from the physical model downstream. In addition, the current research work demonstrates the mentioned numerical models and provides a possible comprehensive perspective for a dam breach scope. They also help to achieve the various hydraulic parameters computations. Besides, they may calculate unmeasured parameters using the experimental data.
Embankment Dams Overtopping Breach: A Numerical Investigation of Hydraulic Results
Iran J Sci Technol Trans Civ Eng
Ebrahimi, Mahdi (author) / Mohammadi, Mirali (author) / Meshkati, Sayed Mohammad Hadi (author) / Imanshoar, Farhad (author)
2024-10-01
10 pages
Article (Journal)
Electronic Resource
English
Embankment Dams Overtopping Breach: A Numerical Investigation of Hydraulic Results
| Springer Verlag | 2024
Modelling the overtopping of embankment dams
| Online Contents | 1996
Overtopping Breaching of Noncohesive Embankment Dams
| British Library Conference Proceedings | 1997