Browsing Mining Engineering by Subject "Numerical modelling"

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Numerical computation of average pillar stress and implications for pillar design

Napier, J.A.L. (John); Malan, D.F. (Daniel Francois) (Southern African Institute of Mining and Metallurgy, 2011-12)

A number of issues relating to the computational aspects of pillar design are addressed in this paper. The computation of average pillar stress values is important when attempting to establish criteria for pillar design ...
The presence of shear stresses in pillars and the effect on factor of safety in a room-and-pillar layout

Maritz, J.A. (Jan) (Southern African Institute of Mining and Metallurgy, 2014-12)

Since the dawn of mining, pillars have been used as primary support to ensure stable workings. Early designs were based on trial and error, after which more scientific means developed over time. A vast amount of progress ...
Some rock engineering aspects of multi-reef pillar extraction on the Ventersdorp Contact Reef

Esterhuyse, J.C.; Malan, D.F. (Daniel Francois) (Southern African Institute of Mining and Metallurgy, 2018-12)

Mining in the Carletonville area of the Witwatersrand Basin predates 1934. Owing to the depletion of higher grade ore, the current activities focus increasingly on the extraction of lower grade secondary reefs as well as ...

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