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Article

Validation of an Experimental Procedure to Determine Bedload Transport Rates in Steep Channels with Coarse Sediment

1
Laboratorio de Hidráulica y Dinámica de Fluidos/Departamento de Ingeniería Civil, Facultad de Ingeniería, Universidad de Cuenca, Cuenca 010203, Ecuador
2
Hydraulic Engineer, United Stated Army Corps of Engineers, Los Angeles, CA 90017, USA
3
Departamento de Recursos Hídricos y Ciencias Ambientales, Universidad de Cuenca, Cuenca 010207, Ecuador
*
Author to whom correspondence should be addressed.
Academic Editor: Bommanna Krishnappan
Water 2021, 13(5), 672; https://doi.org/10.3390/w13050672
Received: 15 January 2021 / Revised: 20 February 2021 / Accepted: 26 February 2021 / Published: 2 March 2021
(This article belongs to the Section Water Erosion and Sediment Transport)
The current study presents an experimental procedure used to determine bedload sediment transport rates in channels with high gradients and coarse sediment. With the aim to validate the procedure for further investigations, laboratory experiments were performed to calculate bedload transport rates. The experiments were performed in a laboratory tilting flume with slopes ranging from 3% to 5%. The sediment particles were uniform in shape (spheres). The experiments were divided into four cases based on sediment size. Three cases of uniform sizes of 10 mm, 15 mm and 25 mm and a case with a grain size distribution formed with the uniform particle sizes were considered. From the experimental results a mathematical bedload transport model was obtained through multiple linear regression. The experimental model was compared with equations presented in the literature obtained for gravel bed rivers. The experimental results agree with some of the models presented in the literature. The closest agreement was seen with models developed for steep slopes especially for the highest slopes considered in the present study. Therefore, it can be concluded that the methodology used can be replicated for the study of bedload transport rates of channels with high gradients and coarse sediment particles to study more general cases of this process such as sediments with non-uniform shapes and sizes. However, a simplified model is proposed to estimate bedload transport rates for slopes up to 5%. View Full-Text
Keywords: high gradient rivers; coarse sediment; experimental model; flume study; bedload transport high gradient rivers; coarse sediment; experimental model; flume study; bedload transport
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MDPI and ACS Style

Carrillo, V.; Petrie, J.; Timbe, L.; Pacheco, E.; Astudillo, W.; Padilla, C.; Cisneros, F. Validation of an Experimental Procedure to Determine Bedload Transport Rates in Steep Channels with Coarse Sediment. Water 2021, 13, 672. https://doi.org/10.3390/w13050672

AMA Style

Carrillo V, Petrie J, Timbe L, Pacheco E, Astudillo W, Padilla C, Cisneros F. Validation of an Experimental Procedure to Determine Bedload Transport Rates in Steep Channels with Coarse Sediment. Water. 2021; 13(5):672. https://doi.org/10.3390/w13050672

Chicago/Turabian Style

Carrillo, Veronica, John Petrie, Luis Timbe, Esteban Pacheco, Washington Astudillo, Carlos Padilla, and Felipe Cisneros. 2021. "Validation of an Experimental Procedure to Determine Bedload Transport Rates in Steep Channels with Coarse Sediment" Water 13, no. 5: 672. https://doi.org/10.3390/w13050672

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