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Mining Publication: Effect of Discontinuity Dip Direction on Hard Rock Pillar Strength
Keywords: Computer simulation Numerical modeling Pillar design
Original creation date: January 2019
Authors: KV Jessu, TR Kostecki, AJ Spearing, G Esterhuizen
Peer Reviewed Journal Article - April 2019
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NIOSHTIC2 Number: 20055462
Trans Soc Min Metall Explor 2019 Jan; 344:1-13
Discontinuities are geologic occurrences in rock and when present within a pillar, reduce the strength of the pillar. Empirical formulas that are commonly used to determine pillar strength do not explicitly take into account the presence of discontinuities and thus can overestimate the pillar strength. The effect of discontinuities on the strength of pillars has been investigated using numerical models, but in these models, the discontinuity strike was parallel with the pillar faces. In this study, fully three-dimensional hard rock pillars were simulated using numerical modeling to understand the effect of the discontinuity dip direction on square and rectangular hard rock pillars. Based on the results, recommendations to assess a pillar’s strength in the presence of a discontinuity are discussed.
First page of Effect of Discontinuity Dip Direction on Hard Rock Pillar StrengthPeer Reviewed Journal Article - April 2019
Go to Web Page
NIOSHTIC2 Number: 20055462
Trans Soc Min Metall Explor 2019 Jan; 344:1-13
See Also
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Evaluation of Mine Illumination Systems Using Numerical Modeling
The Evolution of Intelligent Coal Pillar Design: 1981-2006
Improvement of a Mine Fire Simulation Program � Incorporation of Smoke Rollback into MFIRE 3.0
Mine Face Ventilation: A Comparison of CFD Results Against Benchmark Experiments for the CFD Code Validation
Pillar Design and Strategies for Retreat Mining
Pillar Strength and Design Methodology for Stone Mines
Simplified Pre- and Post-Processing Technique for Performing Finite-Element Analyses of Deep Underground Mines
The State-of-the-Art in Coal Pillar Design
Page last reviewed: May 17, 2019
Page last updated: May 17, 2019
Content source: National Institute for Occupational Safety and Health, Mining Program
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