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Communication Dans Un Congrès Année : 2016

Development of a new submersible test to characterise the erosion of soils and sediments

Résumé

Understanding the mechanism and behavior of the scour process is a most challenging subject. One part of this challenge is the in situ measurement of soil and sediment sensitivity to erosion (in undisturbed and submersible conditions). To improve this understanding, a new test, the Wheel Erosion Test (WET), was developed. It consists of a wheel rotating upon a layer of sediments located in an aquarium filled in with water. The rotating speed of the wheel and the distance to the sediment bed are the main control parameters. If the bed shear stress produced by the wheel is sufficient, grains are eroded and a scour hole is observed. The dimensions of the scour hole (length, width and depth) can be determined by video camera and acoustic measurements allowing the quantification of erosion strength. A first parametric study on Fontainebleau sand validating the principle of the WET is reported.
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Dates et versions

hal-01590503 , version 1 (19-09-2017)

Identifiants

  • HAL Id : hal-01590503 , version 1

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Ousseynou Ndoye, Christophe Chevalier, Philippe Reiffsteck, Carlos Minatchy, Sonia Fanelli, et al.. Development of a new submersible test to characterise the erosion of soils and sediments. ICSE 2016, 8th International Conference on Scour and Erosion, Sep 2016, OXFORD, United Kingdom. 7 p. ⟨hal-01590503⟩
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