Effect of clumping and clustering on more realistic behaviour of Bonded-Particle Model

Ehsan Ghazvinian, Mark S. Diederichs

In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost Conference

Session: M2-B

ABSTRACT: Distinct Element Method has been used by researchers as a means to overcome the shortfall of fracture mechanics in assessing the accumulation of microcracks in rocks, but in this method researchers have been faced by some restrictions. The Bonded-Particle Model (BPM), which has Distinct Element Method implemented in it, has some difficulties in the simulation of unstable propagation of cracks after initiation. In this paper challenges and a possible solution in the Bonded-Particle Model approach will be discussed.

RÉSUMÉ: La mèthode d'éléments distincts (Distinct Element Method) a été utilisé par les rechercheurs comme un moyen de surmonter le manque de compréhension de l'accumulation de microfissures dans les roches. Cependent, certains limitations ont eté identifiées. Le modèle de particules-attachées (Bonded-Particle Model), utilisé dans la mèthode d'éléments distincts, a certaines difficultés dans la simulation de la propagation instable des fissures. Ce papier discute les défis et propose une solution pour utiliser le modèle de particules-attachées. 1 INTRODUCTION

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