Evaluation of the strength of slender pillars

  title={Evaluation of the strength of slender pillars},
  author={Gabriel S Esterhuizen},
Pillars with width-to-height ratios of less than 1.0 are frequently created in underground hard rock mines. The strength of slender pillars can be estimated using empirically developed equations. However, the equations can provide variable results when the width-to-height ratios approach 0.5. This paper investigates some of the issues affecting pillar strength at low width-to-height ratios in hard brittle rock. The investigation includes an evaluation of empirical pillar strength data presented… CONTINUE READING


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