THE BREACHING OF SAND INVESTIGATED IN LARGE-SCALE MODEL TESTS

Cees van Rhee, Adam Bezuijen

Abstract


The physical principles, which govern the breaching process, are analysed. It will be shown that this process involves both geotechnical and hydraulic phenomena. The stability of the surface of the slope and the internal stability are studied. The theories are compared with results from a large-scale experimental programme. Results show that the propagation velocity of the breach is influenced by the permeability and that the resulting slope is gentler as the breach height increases. The breaching process can even become unstable which can lead to failure of a slope over a very large distance..

Keywords


breach; model test; large scale model; sand breach

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