Analytical and Numerical Modeling at High Sediment Concentrationsby Jeffrey B. Bradley, WEST Consultants, United States,
Robert C. MacArthur, WEST Consultants, United States,
Bobby J. Brown, WEST Consultants, United States,
Abstract: Methods for classifying sediment-water mixtures according to material concentration and rheologic properties are discussed. Results from laboratory and field measurements show that bed material load increases several orders of magnitude when fine sediment concentration is greatly increased. Results from field measurements at Mount St. Helens are used to develop a modified B.R. Colby relationship for total bed material discharge that is applicable for hyperconcentrated flow conditions.
Subject Headings: Bed materials | Material properties | Fluid flow | Rheology | Bed loads | Concentrated loads | Sediment loads
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