Explicit predictive technology for modelling of the evolution of damage in ore passes

Loughran, J.G., Anderson, S., and Owen, D.R.J. (2003) Explicit predictive technology for modelling of the evolution of damage in ore passes. In: Proceedings of the 1st Australasian Ground Control in Mining Conference, pp. 95-102. From: Ground Control in Mining: Technology and Practice, 10-13 November 2003, Sydney, NSW, Australia.

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Abstract

This paper reports on the application of discrete element analysis and continuum to discrete fracture to study the evolution of damage that occurs in an ore poss. A hypothetical pass is modelled using discrete element techniques to map the trajectory and kinetic energy of large rock fragments as they pass down the tipple and into the ore pass. Sub-modelling is then conducted on typical jointed rock to demonstrate the damage which occurs as high energy fragments erode the wall structure. The parent rock is modelled as a quasi-brittle material with frictional joints. Material degradation is captured through the implementation of a rotating Rankine fracture cracking model in conjunction with crack insertion adaptive finite element procedures. The simulation shows that continuous bombardment of rock fragments against the jointed wall of the poss results in accumulated damage. Protection strategies could also be modelled with the some technology.

Item ID: 14707
Item Type: Conference Item (Refereed Research Paper - E1)
ISBN: 978-0-7334-2085-6
Date Deposited: 12 Sep 2017 03:51
FoR Codes: 09 ENGINEERING > 0999 Other Engineering > 099999 Engineering not elsewhere classified @ 100%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840104 Iron Ore Exploration @ 100%
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