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  • 1.
    Campbell, Alex
    et al.
    Glencore Copper, Brisbane, Australia; Sustainable Minerals Institute, University of Queensland, Brisbane, Australia.
    Thurley, Matthew
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems. Innovative Machine Vision Pty Ltd, Melbourne, Australia.
    Application of laser scanning to measure fragmentation in underground mines2017In: Mining Technology, ISSN 1474-9009, E-ISSN 1743-2863, Vol. 126, no 4, p. 240-247Article in journal (Refereed)
    Abstract [en]

    The particle size distribution of fragmented rock in mines significantly affects operational performance of loading equipment, materials handling and crushing systems. A number of methods to measure rock fragmentation exist at present, however these systems have a number of shortcomings in an underground environment. This paper outlines the first implementation of high resolution 3D laser scanning for fragmentation measurement in an underground mine. The system is now used routinely for fragmentation measurement at the Ernest Henry sublevel-cave mine following extensive testing and calibration. The system is being used to study the effects of blasting parameters on rock fragmentation to optimise blast design. Results from 125 three dimensional scans measured the average P50 and P80 to be 230mm and 400mm respectively. The equipment, methodology and analysis techniques are described in detail to enable application of the measurement system at other mines.

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