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- Title
Simple physical model for the fragmentation of rock avalanches.
- Authors
Blasio, Fabio; Crosta, Giovanni
- Abstract
Rock avalanches are the largest granular flows on Earth. In contrast to artificial, small-scale granular avalanches, they exhibit a large degree of fragmentation with reduction of average grain volume by a factor of up to 10-10. Even though fragmentation likely affects the whole dynamics of the rock avalanche, as yet the basic mechanics of the process is poorly known. In this work, a simple model is presented for the fragmentation of rock avalanches, assuming that most of the fragmentation occurs along force chains in the granular medium. The landslide motion is simulated along a curved bumpy profile path. The predicted grain spectra are found to agree reasonably with field data.
- Subjects
AVALANCHES; ROCKSLIDES; GRANULAR materials; EARTH (Planet); MATHEMATICAL models; PREDICTION models
- Publication
Acta Mechanica, 2014, Vol 225, Issue 1, p243
- ISSN
0001-5970
- Publication type
Article
- DOI
10.1007/s00707-013-0942-y