Assessment of Bucket Mounted XRF Sensors to Cu and Au Grade Reconciliation For Grasberg Block Caves
ICaRN Technical Meeting Feb 2023
ICaRN – Cadia East bulk ore sorting Research Update
ICaRN Technical Meeting Feb 2023
Methodology for revised production rate curves based on forecasted fragmentation
ICaRN Technical Meeting Feb 2023
Development of a New In-Situ Stress and Stress Change Measurement Technique Using Fiber Optic Sensing
ICaRN Technical Meeting Feb 2023
Wet Muck Spill Risk Assessment – Spill Forecasting Tool
ICaRN Meeting Feb 2023
Improving Tactical and Strategic Subsidence Forecasting through Performance Monitoring
ICaRN Technical Meeting Feb 2023
Using the novel Minpraxis tester to characterize the geometallurgical hardness of minerals
ICaRN Technical Meeting Feb 2023
The Response of X-ray Transmission Scanning and Hi-resolution Strength Tester to Mineral Textures
ICaRN Technical Meeting Feb 2023
Geotechnical characterization of orebodies using the novel Minpraxis tester
ICaRN Technical meeting Feb 2023
Geotechnical and Metallurgical Characterization with the new Minpraxis Tester- Update Feb2023
ICaRN Technical Meeting presentation Feb 2023 about the novel Minpraxis Tester.
Image Processing for Fragmentation Analysis
ICaRN Meeting – February 3, 2023
Study of stress fracturing and bulking for deformation-based ground support design calibration
ICaRN Technical Session Feb 2023
XRT-MPT Response to Mineral Texture
ICaRN Technical Session 14 September 2022
Improving Confidence in Subsidence Forecasting through Surface Monitoring Validation
ICaRN Technical Session 14 September 2022
Key factors determining bulk ore sorting potential at Cadia and test work plan at MineSense
ICaRN Technical Session 14 September 2022
Geotechnical and Metallurgical Characterization with the new Minpraxis Tester
ICaRN Technical Session 14 September 2022
The Caving 2022 Paper Summary and Wet muck Spill Susceptibility Tool Development
ICaRN Technical Session 14 September, 2022
Spalling to Strainbursting – Numerical Analyses for Ground Support Selection
ICaRN Technical Session 14 September , 2022
Study of stress fracturing and bulking for deformation-based ground support design calibration
International Caving Research Network (ICaRN) – Technical Session September 14th, 2022
A Hybrid FEM/DEM Approach to Estimating Rock Block Breakage due to Gravity Free-Fall
An understanding of the fragmentation of rock blocks from gravity free-fall has applications to rock fall analysis as well as block cave mining. In the case of a rock fall, blocks splitting mechanics can reduce the overall block energy and therefore reduce the travel distance of the blocks. Conversely, splitting may result in a larger number of smaller fragments that may still pose a risk despite their reduced dimensions. In the case of block caving, splitting of blocks it is believed to aid the flow of the ore column, to reduce the potential of hang-ups, and to allow for easier extraction and processing of the ore. Traditional methods for block fragmentation analysis use empirical relationships and rule-based approaches that heavily rely on the block geometry, rather than block-to-block interactions. In this paper we present a study of fragmentation processes using a hybrid finite-element/discrete-element method (FEM/DEM). The approach is capable to account for the numerical instability generally associated with the simulation of high velocity surface interactions and subsequent fracturing. To date the analysis has focused on the simulation of free-falling blocks onto a fixed surface. The initial and final block breakage has been compared against parameters including the roughness and curvature of the impacted surface, and the rock block orientation in space during free fall. We believe the results could provide useful insight into designing catchments for rock fall, as well as an increased understanding of the complexities of secondary fragmentation estimates and the range of fragmentation that could be expected in block caving.