Experiments to assess the efficacy of sediment flushing in reservoirs
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Guillén Ludeña, Sebastián; Toapaxi Álvarez, Jorge; Carrillo Sánchez, José María; Castillo Elsitdie, Luis G.Área de conocimiento
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 Universidad Politécnica de Cartagena (Spain), the Escuela Politécnica Nacional (Ecuador) and the Fundación Carolina (Spain) for the financial aids received for his doctoral studies.Fecha de publicación
2020Editorial
CRC PressCita bibliográfica
Guillén-Ludeña, S., Toapaxi, J. A., Carrillo, J. M., Castillo, L. G., Experiments to assess the efficacy of sediment flushing in reservoirs, in Proceedings of the 10th Conference on Fluvial Hydraulics (Delft, Netherlands, 7-10 July 2020), CRC Press, 2020, pp. 349–354. doi: 10.1201/b22619-50.Palabras clave
SedimentosDepósito
Sedimentaión de yacimientos
Embalses
Lavado a presión
Resumen
Sediment flushing has been reported as an efficient measure for reservoir desilta-tion. Nevertheless, the efficacy of flushing varies substantially depending on factors such as to-pography, bed material, initial water head and outlets capacity. This study aims to analyze the influence of the initial water head on the flushing efficacy. This efficacy is defined as the ratio between the volume of sediments evacuated to that of water released. For that purpose, 30 labor-atory experiments were conducted in a 12.5 m long and 0.30 m wide horizontal rectangular flume. There, 10 pairs hs – hw were tested for 3 different reservoir volumes, where hs and hw stand for the initial sediment and water elevations respectively. The measurements consisted in videos from a side of the channel which allowed to characterize the evolution of the water and bed surfaces during the experiments. The results show that flushing efficacy increase as the ratio hw/hs de-creases.
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