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Mining Publication: Behavior of a Coal Pillar Prone to Burst in the Southern Appalachian Basin of the United States
Keywords: Appalachian basin Bumps Convergence Longwall mining Pillars
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: August 1990
Authors: AT Iannacchione
Conference Paper - August 1990
Download PDF Document (0.51 MB)
NIOSHTIC2 Number: 20033268
Rockbursts and Seismicity in Mines. Fairhurst C., ed., A. A. Balkema, 1990 Aug; :295-300
One of the more pressing engineering problems for deep longwall mines in the southern Appalachian Basin is to design longwall systems that will eliminate catastrophic coal pillar failure from the working environment. The purpose of this U.S. Bureau of Mines study is to quantify the behavior of a particular size abutment pillar prone to burst or bump (local terminology). Because of the 24.4-M (80-ft) square abutment study pillar is within the pillar size commonly used in this region, understanding the behavior of this pillar should aid in future efforts to design optimum mining strategies. This research has attempted to construct the stress and convergence profiles of the pillar in order to evaluate the ultimate strength, pillar deformation modulus, visco-elastic deformation, and violent failure characteristics during longwall mining. This information reflects the overriding influence of the local geologic characteristics on bursts, provides the field measurements needed to verify concurrent modelling studies, and suggests some basic mechanisms associated with the coal pillar bursts discussed in this paper.
Image of publication Behavior of a Coal Pillar Prone to Burst in the Southern Appalachian Basin of the United StatesConference Paper - August 1990
Download PDF Document (0.51 MB)
NIOSHTIC2 Number: 20033268
Rockbursts and Seismicity in Mines. Fairhurst C., ed., A. A. Balkema, 1990 Aug; :295-300
See Also
Coal Bumps and Odd Dynamic Phenomena - A Numerical Investigation
Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
Empirical Guidelines for Longwall Ground Control Design
Evaluation of the Impact of Standing Support on Ground Behavior in Longwall Tailgates
Experimental Study on the Confinement-Dependent Characteristics of a Utah Coal Considering the Anisotropy by Cleats
Investigation of a Rock-Burst Site, Sunshine Mine, Kellogg, Idaho
Large-Scale Strata Response to Longwall Mining: A Case Study
Multiple Seam Mining Interactions: Case Histories from the Harris No. 1 Mine
Multiple-Seam Mining Interactions: Case Histories from the Harris No. 1 Mine
Rock Mechanics Investigations at the Lucky Friday Mine (In Three Parts): 1. Instrumentation of an Experimental Underhand Longwall Stope
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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