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dc.contributor.author | Esterhuyse, Johann C.![]() |
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dc.contributor.author | Malan, D.F. (Daniel Francois)![]() |
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dc.date.accessioned | 2024-08-16T10:36:43Z | |
dc.date.available | 2024-08-16T10:36:43Z | |
dc.date.issued | 2023-05 | |
dc.description | This work forms part of the PhD study of Johann Esterhuyse at the University of Pretoria. | en_US |
dc.description.abstract | In this study we explore the use of a novel numerical modelling approach to study the effect of pillar reinforcement on pillar stability. Case studies in the literature indicate that tendons, strapping of the pillars, and shotcrete or thin spray-on liners are commonly used to reinforce pillars. No clear methodology exists to select the type of support or to design the capacity of the support required, however. This has led to ongoing collapses in some mines in spite of heavy support being used to reinforce unstable pillars. A limit equilibrium model with confinement on the edge of the pillar was used to simulate the interaction of the support with the failing pillar. The model correctly predicts that an increase in confinement will lead to a decrease in the extent of pillar failure. As the displacement discontinuity boundary element method allows for the efficient solution of largescale bord-and-pillar layouts, the effect of pillar confinement can now be studied on a mine-wide scale. Accurate calibration of the limit equilibrium model is, however, required before this method can be used for the design of effective pillar support. | en_US |
dc.description.department | Mining Engineering | en_US |
dc.description.librarian | am2024 | en_US |
dc.description.sdg | SDG-09: Industry, innovation and infrastructure | en_US |
dc.description.uri | http://www.saimm.co.za/journal-papers | en_US |
dc.identifier.citation | Esterhuyse, J.C. and Malan, D.F. 2023. Simulating pillar reinforcement using a displacement discontinuity boundary element code. Journal of the Southern African Institute of Mining and Metallurgy, vol. 123, no. 5. pp. 211–222. http://dx.DOI.org/10.17159/2411-9717/2450/2023. | en_US |
dc.identifier.issn | 2225-6253 (print) | |
dc.identifier.issn | 2411-9717 (online) | |
dc.identifier.other | 10.17159/2411-9717/2450/2023 | |
dc.identifier.uri | http://hdl.handle.net/2263/97694 | |
dc.language.iso | en | en_US |
dc.publisher | Southern African Institute of Mining and Metallurgy | en_US |
dc.rights | © The Southern African Institute of Mining and Metallurgy, 2023. | en_US |
dc.subject | Pillar reinforcment | en_US |
dc.subject | Limit equilibrium model | en_US |
dc.subject | Displacement discontinuity boundary element code | en_US |
dc.subject | SDG-09: Industry, innovation and infrastructure | en_US |
dc.title | Simulating pillar reinforcement using a displacement discontinuity boundary element code | en_US |
dc.type | Article | en_US |