Mining Of Orebodies under Shear Loading Part 2 -Failure Modes and Mechanisms

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dc.contributor.authorSuorineni, Fidelis T.
dc.contributor.authorMgumbwa, Juma J.
dc.contributor.authorKaiser, P. K.
dc.contributor.authorThibodeau, Denis
dc.date.accessioned2016-07-18T08:44:53Z
dc.date.available2016-07-18T08:44:53Z
dc.date.issued2014
dc.description.abstractPart 1 of the paper defined shear loaded orebodies and showed through case histories that bothpillars and excavations are at elevated risks of failure when mining these orebodies. Part 2 of thepaper presents new knowledge on the behaviour of pillars and excavations when mining suchorebodies. Numerical modelling is used to understand the behaviours of these structures in theorebodies. It is established that pillars in shear suffer confinement loss compared to theirequivalents under pure compression. The confinement loss increases with increasing shearloading in pillars with width : height (W : H)§1. For pillars with W : H §1, the Lunder andPakalnis (1997) empirical pillar design chart should be used with caution. For excavations ineccentrically loaded orebodies, passive and active high stress envelopes are created in theexcavation process. The combined effect of the active high stress and tension zones often resultsin excavation surface sloughing.en_US
dc.identifier.citationSuorineni, F.T., J. Mgumbwa, J., Kaiser, P.K. and Thibodeau, D., 2014. Mining of orebodies under shear loading Part 2–failure modes and mechanisms. Mining Technology, 123(4), pp.240-249.en_US
dc.identifier.doi10.1179/1743286314Y.0000000072
dc.identifier.urihttp://hdl.handle.net/20.500.11810/3242
dc.language.isoenen_US
dc.publisherTaylor and Francisen_US
dc.subjectOrebodies in shearen_US
dc.subjectNumerical modellingen_US
dc.subjectNew knowledgeen_US
dc.subjectPillarsen_US
dc.subjectExcavationsen_US
dc.subjectConfinement lossen_US
dc.subjectPillar design charten_US
dc.subjectActive and passive stress envelopesen_US
dc.titleMining Of Orebodies under Shear Loading Part 2 -Failure Modes and Mechanismsen_US
dc.typeJournal Article, Peer Revieweden_US
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