Investigating the Performance of Hard Rock Pillars with Different Width to Height Ratios and the Effects of Inclination, a Discontinuity and Blasting
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Pillar design, a challenge in underground hard rock mines, contributes to catastrophic failure or economic loss based on its failure mechanism. Factors influencing the pillar failure mechanisms such as pillar inclination, presence of discontinuity and blasting effects were investigated with the help of laboratory tests and numerical analyses to create a design structure. Lastly, the pillar designs were evaluated by developing strain based monitoring method for pillar classification and pillar optimization.
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Jessu, Kashi; Spearing, Sam (2018)© The Southern African Institute of Mining and Metallurgy, 2018. Pillars are commonly left in underground mining, either for secondary extraction after the primary stopes have been filled or to maintain the overall ...
Jessu, Kashi; Spearing, Sam (2018)Discontinuities are an inherent part of the rock mass and majorly affect the stability of the excavation skin and pillars. The dip of the discontinuities and their properties also have a significant effect on the strength ...
Jessu, Kashi; Spearing, Sam; Sharifzadeh, Mostafa (2018)Pillars play a critical role in an underground mine, as an inadequate pillar design could lead to pillar failure, which may result in catastrophic damage, while an over-designed pillar would lead to ore loss, causing ...