Author(s): Shu-Qing Yang

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Keywords: River flow; sediment discharge; particle size; correlation coefficient

Abstract: This paper investigates the sediment transport capacity in rivers, the correlations between the total sediment discharges and various hydraulic parameters are examined by using 1593 records in the database compiled by Brownlie, in which the particle sizes are in the range of 0.02–57 mm, the water depth ranges from 0.019–16.43 m, the energy slope is in the range of 0.003–0.0126 and the maximum concentration is 8.47 kg/m3. Among the existing hydraulic parameters including the widely cited parameters, such as VS/ω, V 3/(ghω) and T, the highest correlation coefficient is achieved by the new parameterT T when the database is used for comparison. This investigation also shows that the measured sediment discharge g t is linearly correlated with the parameter T T and the proportional factor (=12.5) obtained from flume data is still valid for expressing sediment discharge in rivers and canals. The measured and calculated total loads from various rivers are in a good agreement.

DOI: https://doi.org/10.1080/00221686.2005.9641229

Year: 2005