INCLINED PILLAR STRENGTH CONSIDERATIONS: REVIEW OF DIFFERENT METHODOLOGIES

R. Flattery, Z. Agioutantis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Coal and rock pillar design is critical not only for mineral extraction but also for the safety of the mine operators. Pillar strength can be estimated through numerous empirical formulas that are available in the literature, which are typically based on a statistical analysis of case study data. The limitation of most of these equations is that they only considered the width to height ratio and in situ rock or coal strength for pillars in horizontal seams. The adoption of such equations to estimate pillar strength in inclined seams may overestimate the pillar strength and ultimately lead to a poor pillar design. This paper will discuss different techniques that can be used to estimate pillar strength in inclined seams as well as present preliminary modeling results for stress redistribution around inclined pillars. Factors in the parametric analysis include pillar shapes, geometry, and seam inclination.

Original languageEnglish
Title of host publicationSME Annual Conference and Expo 2022
Pages200-203
Number of pages4
ISBN (Electronic)9781713845089
StatePublished - 2022
EventSME Annual Conference and Expo 2022 - Salt Lake City, United States
Duration: Feb 27 2022Mar 2 2022

Publication series

NameSME Annual Conference and Expo 2022

Conference

ConferenceSME Annual Conference and Expo 2022
Country/TerritoryUnited States
CitySalt Lake City
Period2/27/223/2/22

Bibliographical note

Funding Information:
This work was supported by NIH Grant R01 DC007124-01. We acknowledge the support and collaboration of the Speech Production and Articulation kNowledge (SPAN) group at the University of Southern California.

Publisher Copyright:
Copyright © 2022 by SME.

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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