A coupled DFE-Newtonian Cellular Automata scheme for simulation of cave initiation, propagation and induced seismicity
on Jun 12, 2012 in Downloads, Papers
Beck, D., Beck Engineering Sharrok, G., The University of New South Wales, Sydney, Australia Capes, G., Newcrest Mining Limited, Orange, NSW, Australia Coupled, granular flow-deformation simulations have been undertaken at a number of caving operations to simulate cave initiation, propagation and gravity flow. The tool combines a Newtonian Cellular Automata (NCA) representation of the cave muckpile with an explicit Discontinuum Finite Element (DFE) model of the rock mass mine scale and incorporate high resolution input data such as large numbers of explicit structures in the rock mass and...
Read MoreProbabilistic stability criteria for open pit and underground mines
on May 19, 2012 in DownloadsD. Beck Beck Engineering, Australia 3D Strain softening, dilatant, Finite Element models utilising higher order elements can achieve a realistic simulation of displacement and damage induced by mining. This allows application of rigorous, displacement and velocity based stability criteria for both surface and underground excavations. Using modern computer packages and hardware, rapid simulation times also allow probabilistic estimates of the extent and magnitude of displacement and damage. Some case studies are presented that describe the application of the displacement realistic models and...
Read MoreExplicit discontinuum simulation for probabilistic forecasting of fault slip and rockmass seismicity
on May 18, 2012 in Downloads, PapersD. Beck, V. Levkovitch, Beck Engineering, B. Simser, Xstrata Nickel, Nickel Rim South Mine, Sudbury, Canada With increasing depth, there will always be situations where stress, strength and structure combine to store energy in unstable ways around mining work areas. Some mining induced seismicity is unavoidable. The job of the planning team is to balance the compromises between production demands and rock mechanics driven sequencing principles so that all essential constraints – safety, economy and recovery – are met. Achieving a sufficient and defendable balance requires quantitative...
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