Abstract
Dam ruptures can cause large water discharges over a short period of time, which constitutes a serious threat for downstream regions. In this context, the paper focuses on the risk assessment of the Sélingué reservoir-dam rupture’s scenario. Computational fluid dynamics “ANSYS FLUENT” code is used to simulate the environmental impact of its rupture. In order to assess potential risks for each zone, the evolution of physical parameters such as water flow, water volume and height is determined and briefly discussed. Possible environmental risks are also examined in terms of critical infrastructure protection. In order to better comprehend the simulation results, two zones are distinguished by their altitudes on the simulation profile. Water flow, volume and height in each zone have been determined as a function of time. Results show that the magnitude of the damage is strongly related to the distance between each zone and the dam. The extent of this damage in the parts nearest to the dam is approximately five to six times higher compared to the other zones. Furthermore, water level in the nearest zones is found to reach more than 1 m within just few hours after the rupture. We therefore suggest that the low-altitude areas of this reservoir dam should be urgently evacuated.
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Acknowledgements
The National Key R&D Program of China (Grant No. 2016YFB0601101) and the Open Fund Project for State Key Laboratory of Iron and Steel Industry Environmental Protection (No. 2016YZC04) supported this work.
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Drame, A.S., Zhang, Y. & Wang, L. Risk analysis of a dam rupture scenario on adjacent zones using ANSYS FLUENT: case study of Sélingué reservoir dam, Mali. Int. J. Environ. Sci. Technol. 18, 965–978 (2021). https://doi.org/10.1007/s13762-020-02885-9
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DOI: https://doi.org/10.1007/s13762-020-02885-9