Discrete Element Modeling of a Rockfall in the South of the 'Massif Central', France
| Autor: | Dominique Daudon, Pascal Villard, Stiven Cuervo, Vincent Richefeu, Julien Lorentz |
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| Přispěvatelé: | Peyroux, Robert, Nicolas Sciarra, Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), GéoMécanique, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Ingénierie des Mouvements du Sol et des Risques Naturels (IMSRN) |
| Rok vydání: | 2015 |
| Předmět: |
geography
geography.geographical_feature_category 010504 meteorology & atmospheric sciences Computer simulation 05 social sciences 0507 social and economic geography Abutment [PHYS.MECA]Physics [physics]/Mechanics [physics] Dissipation 01 natural sciences Discrete element method Physics::Geophysics Rockfall Fracture (geology) Geotechnical engineering [PHYS.MECA] Physics [physics]/Mechanics [physics] Rock mass classification 050703 geography ComputingMilieux_MISCELLANEOUS Geology 0105 earth and related environmental sciences Physical quantity |
| Zdroj: | Engineering Geology for Society and Territory-Volume 2 ISBN: 9783319090566 Engineering Geology for Society and Territory, IAEG XII Congress Engineering Geology for Society and Territory, IAEG XII Congress, Sep 2014, Torino, Italy. pp.1657-1661 |
| DOI: | 10.1007/978-3-319-09057-3_294 |
| Popis: | This work aims to model the mechanical behavior of a natural rockfall of approximately 1,000 m3 using the discrete element method (DEM). The cliff geometry, fracture network, deposit geometry and slope topography, resulted from field measurements. The numerical model used for this study accounts for the energy dissipated by collisions and friction/abutment in the bulk of the rock mass as well as at the rock-slope interface. The contact parameters needed for the numerical simulation are issued from the literature. A sensitivity study was performed in order to analyze the role played by the contact parameters, the blocks shape and the slope geometry (roughness) in some important indicators (mass distance propagation, energy dissipation and rockfall deposit geometry). From the results obtained, it appears that the numerical model is able to provide, only from basic inputs collected in situ, a valuable description of natural rockfall propagation and stop. Assessment of different physical quantities such as energy dissipation modes (by collisions or friction/abutment), allowed us to also improve the understanding of rockfall events. |
| Databáze: | OpenAIRE |
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