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(Article of periodic en Anglais - 2004)

Document title

Effect of sill spacing and sediment size grading on scouring at grade-control structures

Authors(s) and Affiliation(s)

MARION A. ; LENZI M.A. ; COMITI F. ;

Abstract

The depth, length and shape of the scour holes in gravel-bed rivers can be predicted reasonably using recently developed formulae. In this paper, a series of test have been conducted to determine the effect of bed sill spacing and sediment grading on the potential erosion by jets forming over the sills. A new formula is derived, applicable to high-gradient streams (slope>0.04), which can be applied to the special case of scour holes developed by interfering sills. Sediment size gradation, not accounted for in previous formulae, is found to have a significant effect on the scour dimensions and is included in the new predictive formula

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2004, vol. 29, no8 [pp. 983-993]

Bibliographic references : 23 ref.

Collation : Illustration ;

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2005.
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