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Mining Publication: Ground Failures in Coal Mines with Weak Roof
Keywords: Coal mining Roof falls Support design and selection
Original creation date: January 2010
Authors: GM Molinda, C Mark
Peer Reviewed Journal Article - January 2010
Download PDF Document (4.65 MB)
NIOSHTIC2 Number: 20037348
Electron J Geotech Eng 2010 Jan; 15(F):547-588
Coal miners who work and travel under supported roof expect to be protected from rock falls. However, rock fall accidents and injuries continue to occur in coal mines that have been supported according to the roof control plan. Experience at coal mines with large numbers of falls indicates that many have weak roof. Control of this roof may require additional ground control measures. An understanding of the geologic and stress conditions which lead to roof falls is necessary to assess the risk of failure and to design roof reinforcement to improve stability. Six common roof fall types, with attached field examples, are described. Roof support practices for each fall type are also described.
Image of publication Ground Failures in Coal Mines with Weak RoofPeer Reviewed Journal Article - January 2010
Download PDF Document (4.65 MB)
NIOSHTIC2 Number: 20037348
Electron J Geotech Eng 2010 Jan; 15(F):547-588
See Also
Development and Application of the Coal Mine Roof Rating (CMRR)
Diagnosing and Controlling Moisture-Sensitive Roof in Coal Mines
Geologic Hazards and Roof Stability in Coal Mines
The Introduction of Roof Bolting to U.S. Underground Coal Mines (1948-1960): A Cautionary Tale
Optimizing Secondary Roof Support with the NIOSH Support Technology Optimization Program (STOP)
Overview of Coal Mine Ground Control Issues in the Illinois Basin
Performance Characteristics for Welded Wire Screen Used for Surface Control in Underground Coal Mines
Preventing Falls of Ground in Coal Mines With Exceptionally Low-Strength Roof: Two Case Studies
Roof Screening: Best Practices and Roof Bolting Machines
Support Design Procedures for Difficult Ground Conditions
Page last reviewed: July 15, 2015
Page last updated: July 15, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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