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 language | English |
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| Title of host publication | SME Annual Conference and Expo 2022 |
| Pages | 200-203 |
| Number of pages | 4 |
| ISBN (Electronic) | 9781713845089 |
| State | Published - 2022 |
| Event | SME Annual Conference and Expo 2022 - Salt Lake City, United States Duration: Feb 27 2022 → Mar 2 2022 |
Publication series
| Name | SME Annual Conference and Expo 2022 |
|---|
Conference
| Conference | SME Annual Conference and Expo 2022 |
|---|---|
| Country/Territory | United States |
| City | Salt Lake City |
| Period | 2/27/22 → 3/2/22 |
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