Critical Shear Stress of Bimodal Sediment in Sand-Gravel Rivers
Publication: Journal of Hydraulic Engineering
Volume 133, Issue 5
Abstract
A new model for the critical shear stress and the transport of graded sediment is presented. The model is based on the size distribution of the bed surface and can be used to compute sediment transport rates in numerical simulations with an active layer model. This model makes a distinction between unimodal and bimodal sediments. It is assumed that all size fractions of unimodal sediments have the same critical shear stress while there is selective transport for the gravel fractions of bimodal sediments. A recently published laboratory transport data set is used to calibrate our model.
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Acknowledgments
This work was supported by Electricité de France—Laboratoire National d’Hydraulique et Environnement and SOGREAH. The authors thank Peter R. Wilcock for making available the data used in the paper.
References
Egiazaroff, I. V. (1965). “Calculation of nonuniform sediment concentrations.” J. Hydr. Div., 91(4), 225–247.
Einstein, H. A. (1950). “The bed-load function for sediment transport in open channel flows.” Technical Bulletin No. 1026, U.S. Dept. of Agriculture, Soil Conservation Service, Washington, D.C.
Gomez, B., and Church, M. (1989). “An assessment of bed load sediment transport formulae for gravel bed rivers.” Water Resour. Res., 25(6), 1161–1186.
Hirano, M. (1971). “River bed degradation with armoring.” Trans. Jpn. Soc. Civil Eng., 3(2), 194–195.
Kuhnle, R. A. (1993). “Incipient motion of sand-gravel sediment mixtures.” J. Hydraul. Eng., 119(12), 1400–1415.
Misri, R. L., Garde, R. J., and Ranga Raju, K. G. (1984). “Bed load transport of coarse nonuniform sediment.” J. Hydraul. Eng., 110(3), 312–328.
Parker, G. (1990). “Surface-based bedload transport relation for gravel rivers.” J. Hydraul. Res., 28(4), 417–436.
Parker, G., and Klingeman, P. C. (1982). “On why gravel bed streams are paved.” Water Resour. Res., 18(10), 1409–1423.
Parker, G., Klingeman, P. C., and Mclean, D. G. (1982). “Bedload and size distribution in paved gravel-bed streams.” J. Hydr. Div., 108(4), 544–571.
Van Rijn, L. C. (1993). Principles of sediment transport in rivers, estuaries, and coastal areas, Aqua Publications, Amsterdam, The Netherlands.
van der Scheer, P., Ribberink, J. S., and Blom, A. (2002). “Transport formulas for graded sediment. Behaviour of transport formulas and verification with data.” Civil Engineering and Management Research Rep. 2002R-002/WEM-001 (Ext. r. no. 1568–4652), Univ. of Twente, Enschede, The Netherlands.
Wathen, S. J., Ferguson, R. I., Hoey, T. B., and Werritty, A. (1995). “Unequal mobility of sand and gravel in weakly bimodal river sediments.” Water Resour. Res., 31(8), 2087–2096.
Wilcock, P. R. (1993). “Critical shear stress of natural sediments.” J. Hydraul. Eng., 119(4), 491–505.
Wilcock, P. R., and Crowe, J. C. (2003). “Surface-based transport model for mixed-size sediment.” J. Hydraul. Eng., 129(2), 120–128.
Wilcock, P. R., and Kenworthy, S. T., (2002). “A two-fraction model for the transport of sand/gravel mixtures.” Water Resour. Res., 38(10), 1194–1205.
Wilcock, P. R., Kenworthy, S. T., and Crowe, J. C. (2001). “Experimental study of the transport of mixed sand and gravel.” Water Resour. Res., 37(12), 3349–3358.
Wilcock, P. R., and McArdell, B. W. (1993). “Surface-based fractional transport rates: Mobilization thresholds and partial transport of a sand-gravel sediment.” Water Resour. Res., 29(4), 1297–1312.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 133 • Issue 5 • May 2007
Pages: 555 - 559
Copyright
© 2007 ASCE.
History
Received: Jun 7, 2005
Accepted: Aug 30, 2006
Published online: May 1, 2007
Published in print: May 2007
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