TECHNICAL PAPERS
Apr 1, 1983

Development and Prediction of Bed Armoring

Publication: Journal of Hydraulic Engineering
Volume 109, Issue 4

Abstract

The major purposes of this study are to use available data to predict: (1) The development of bed armoring; and (2) the final composition of grain size distribution. First, the different factors influencing the incipient motion for nonuniform sediment size distribution are examined. Then, the procedures for simulating the grain size distribution of the armor layer are developed based on modifications of Gessler's procedure and Einstein's hiding factor. Three regression equations are derived to predict the median size, d30 and d84, of the final armor bed, given the initial sediment bed size distribution and flow conditions. A modified Shields diagram for incipient motion for nonuniform sediment sizes is also suggested.

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References

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Colby, B. R., and Hembree, C. H., “Computations of Total Sediment Discharge, Niobrara River near Cody, Nebraska,” Water‐supply Paper 1357, U.S. Geological Survey, Washington, D.C., 1955.
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Go to Journal of Hydraulic Engineering
Journal of Hydraulic Engineering
Volume 109Issue 4April 1983
Pages: 611 - 629

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Published online: Apr 1, 1983
Published in print: Apr 1983

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Authors

Affiliations

Hseih W. Shen, M. ASCE
Prof., Dept. of Civ. Engrg., Colorado State Univ., Fort Collins, Colo.
Jau‐Yau Lu
Research Assoc., Dept. of Civ. Engrg., Colorado State Univ., Fort Collins, Colo.

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