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

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dc.creatorSuorineni, Fidelis T.
dc.creatorMgumbwa, Juma J.
dc.creatorKaiser, P. K.
dc.creatorThibodeau, Denis
dc.date2016-07-18T08:44:53Z
dc.date2016-07-18T08:44:53Z
dc.date2014
dc.date.accessioned2018-03-27T08:32:48Z
dc.date.available2018-03-27T08:32:48Z
dc.descriptionPart 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.
dc.identifierSuorineni, 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.
dc.identifierhttp://hdl.handle.net/20.500.11810/3242
dc.identifier10.1179/1743286314Y.0000000072
dc.identifier.urihttp://hdl.handle.net/20.500.11810/3242
dc.languageen
dc.publisherTaylor and Francis
dc.subjectOrebodies in shear
dc.subjectNumerical modelling
dc.subjectNew knowledge
dc.subjectPillars
dc.subjectExcavations
dc.subjectConfinement loss
dc.subjectPillar design chart
dc.subjectActive and passive stress envelopes
dc.titleMining Of Orebodies under Shear Loading Part 2 -Failure Modes and Mechanisms
dc.typeJournal Article, Peer Reviewed

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