Efficacy of sediment flushing for varying bed slopes and sediment grain sizes
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Ingeniería HidráulicaPatrocinadores
This study is part of the project EFISED (20403/SF/17) funded by the Fundación Séneca from Región de Murcia (Spain). The second author thanks to the Escuela Politécnica Nacional (Ecuador), to the Fundación Carolina (Spain), and to Universidad Politécnica de Cartagena Spain) for the financial aids received for his doctoral studiesFecha de publicación
2022Editorial
International Association for Hydro-Environment Engineering and Research (IAHR)Cita bibliográfica
Guillén Ludeña, S., Toapaxi, J. A., Castillo, L. G., Efficacy of Sediment Flushing for varying Bed Slopes and Sediment Grain Sizes, in Proceedings of the 39th IAHR World Congress, 2022, pp. 1208–1212. doi: 10.3850/IAHR-39WC2521711920221462.Palabras clave
Reservoir sedimentationFlushing
Efficacy
Sediment dynamics
Fluvial hydraulics
Resumen
Reservoir sedimentation is nowadays a major concern in the operational management of dams. The increasing volume of sediments deposited in reservoirs reduce their storage capacity and negatively affects their sustainability. In this context, sediment flushing has been reported as one of the most efficient techniques to mitigate the negative effects related to reservoir sedimentation. The efficiency of this technique is defined herein as the ratio of the volume of sediment evacuated with respect to the volume of water released (Vs / Vw). This efficiency depends on factors such as the planform geometry of the reservoir, the discharge capacity of the bottom outlets, the initial water head (hw), the volume of water initially stored, the thickness of the sediment bottom layer (hs), and the sediment characteristics. This study aims to assess the efficacy of flushing operations for different initial water heads (hw) and stored volumes (Vw), different bed slopes (S0), and different grain sizes ...
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