| Autor: |
E. Ghazvinian, Mark S. Diederichs, Katherine S. Kalenchuk |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Proceedings of the International Conference on Deep and High Stress Mining. |
| ISSN: |
2208-8180 |
| DOI: |
10.36487/acg_rep/1704_19_ghazvinian |
| Popis: |
Three-dimensional Voronoi tessellations are utilised to demonstrate the simulation of brittle damage around underground mine excavations. Synthetic rock mass models are developed based on calibrated simulations that have been up-scaled to represent excavation-scale rock mass conditions. Rock mass anisotropy plays a significant role in the stability of underground excavations, and so anisotropic conditions are replicated by implementing the up-scaled laminated grain-based model composed of elongated three-dimensional Voronoi blocks. Models explore the influence of the orientation of anisotropic fabric with respect to the in situ stress tensor to demonstrate the Voronoi-based discrete element method modelling technique for simulation of brittle failure. The numerical results verified the success of this approach in capturing the correct failure mode controlled by fabric-guided fracturing in the walls of deep undergrounds openings. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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