Experimental Analysis and Micromechanical Modelling of Dry Granular Flow and Impacts in Laboratory Flume Tests

The paper presents the results of a numerical analysis, carried out by using the Discrete Element Method (DEM) and aimed at reproducing a series of tests on a small-scale laboratory model of a slope. Particular attention is devoted to the validation of DEM when used for the prediction of the run-out...

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Bibliographic Details
Published in:Rock mechanics and rock engineering 2008-02, Vol.41 (1), p.153-177
Main Authors: Valentino, R., Barla, G., Montrasio, L.
Format: Article
Language:English
Subjects:
Civil Engineering
Earth and Environmental Science
Earth Sciences
Fluid dynamics
Geological engineering
Geophysics
Geophysics/Geodesy
Mathematical models
Numerical analysis
Rocks
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Summary:The paper presents the results of a numerical analysis, carried out by using the Discrete Element Method (DEM) and aimed at reproducing a series of tests on a small-scale laboratory model of a slope. Particular attention is devoted to the validation of DEM when used for the prediction of the run-out distance and of the impact force on obstacles. The soil used for the small-scale model is a mono-granular medium sand, which revealed to be particularly suitable to simulate flows like debris or rock avalanches. The experimental set-up comprises a flume equipped with a system of differently sized instrumented obstacles. The numerical model of the granular flow has been calibrated on the basis of the displacement measurements, obtained through a photogrammetric technique.
ISSN:0723-2632
1434-453X
DOI:10.1007/s00603-006-0126-3