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Mining Publication: Reducing the Risk of Ground Falls During Pillar Recovery
Keywords: Ground falls Pillar design Pillars
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: December 2003
Authors: C Mark, DM Pappas, FE Chase
Conference Paper - December 2003
Download PDF Document (1.94 MB)
NIOSHTIC2 Number: 20026085
SME preprint 03-137. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2003 Dec; :1-9
Pillar recovery has been associated with nearly one-third of roof fall fatalities in underground coal mines during the past decade. Safe pillar recovery requires global stability and local stability. Global stability is addressed primarily through pillar design. The local stability risk factors include cut sequence, the final pillar stump, supplemental supports (timbers versus mobile roof supports), roof bolting, and many others. The National Institute for Occupational Safety and Health evaluated each of these factors through field research and analysis of accident statistics. This paper discusses design methods and technologies that have been transferred to the mining community and implemented.
Image of publication Reducing the Risk of Ground Falls During Pillar RecoveryConference Paper - December 2003
Download PDF Document (1.94 MB)
NIOSHTIC2 Number: 20026085
SME preprint 03-137. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2003 Dec; :1-9
See Also
Analysis of Pillar Design Practices and Techniques for U.S. Limestone Mines
Assessment of Stable and Failed Pillars in Underground Limestone Mines
The Effects of Roof and Floor Interface Slip on Coal Pillar Behavior
The Forgotten Denominator: Pillar Loading
Multiple Seam Mining Interactions: Case Histories from the Harris No. 1 Mine
Multiple-Seam Mining Interactions: Case Histories from the Harris No. 1 Mine
Pillar Design and Strategies for Retreat Mining
Pillar Design Issues for Underground Stone Mines
Sizing of Final Stumps for Safer Pillar Extraction
The Unpredictable Life Cycle of a Coal Pillar
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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