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Mining Publication: Proceedings: Mechanics and Mitigation of Violent Failure in Coal and Hard-Rock Mines
Keywords: Coal mining Ground control Hardrock mining Rock mechanics U.S. Bureau of Mines
Original creation date: May 1995
Authors: H Maleki, PF Wopat, RC Repshe, RJ Tuchman
NIOSH/USBM Numbered Publication - May 1995
Download PDF Document (23.73 MB)
NIOSHTIC2 Number: 20024601
Spokane, PA: U.S. Department of the Interior, Bureau of Mines, SP 01-95, NTIS number PB95-211967, 1995 Jan; :1-355
Papers presented at a U.S. Bureau of Mines (USBM) technology transfer seminar describe the causes of violent material failure in U.S. mines, measurement techniques for monitoring events that result in violent failure, and mitigation techniques for controlling failure. Specific factors contributing to violent failure are identified on the basis of geotechnical monitoring in 16 U.S. hard-rock and coal mines and on statistical analyses of 172 coal bump events. New monitoring and analysis techniques developed as tools for assessing violent failure; geotomographic methods that provide new capabilities for the study of material failure and stress changes over large areas; and seismic methods for determining source locations, calculating energy release, and determining source mechanisms are described. Fair correlations have been established among seismic parameters, elastic stresses, face support load, and violent events. USBM studies have identified the advantages using both yielding and stable pillars for coal bump control. A computer program has been developed as an aid for selecting room-and-pillar layouts. The practical aspects of implementing a destressing program is outlined for coal mines, while the importance of mine orientation and timely support installation in controlling buckling-type failure is identified for hard-rock mines.
Image of publication Proceedings: Mechanics and Mitigation of Violent Failure in Coal and Hard-Rock MinesNIOSH/USBM Numbered Publication - May 1995
Download PDF Document (23.73 MB)
NIOSHTIC2 Number: 20024601
Spokane, PA: U.S. Department of the Interior, Bureau of Mines, SP 01-95, NTIS number PB95-211967, 1995 Jan; :1-355
See Also
Coal-Mine Ventilation Factors
Comparison of Ground Conditions and Ground Control Practices in the United States and Australia
The Effects of Roof and Floor Interface Slip on Coal Pillar Behavior
Elastic and Shear Moduli of Coal Measure Rocks Derived from Basic Well Logs Using Fractal Statistics and Radial Basis Functions
MULSIM/NL Application and Practitioner's Manual
MULSIM/NL Theoretical and Programmer's Manual
Pillar Mechanics of Coal Mine Bursts: A Control Strategy
Reservoir Rock Properties of Coal Measure Strata of the Lower Monongahela Group, Greene County (Southwestern Pennsylvania), from Methane Control and Production Perspectives
Roof Screening for Underground Coal Mines: Recent Developments
Variation of Horizontal Stresses and Strains in Mines in Bedded Deposits in the Eastern and Midwestern United States
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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