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Mining Publication: Time Dependent Roof Deterioration at a Central Ohio Coal Mine
Keywords: Roof quality Weak rock
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: July 2009
Authors: TM Klemetti, DC Oyler, GM Molinda
Conference Paper - July 2009
Download PDF Document (1.27 MB)
NIOSHTIC2 Number: 20035811
Proceedings of the 28th International Conference on Ground Control in Mining, July 28-30, 2009, Morgantown, West Virginia. Peng SS, Barczak T, Mark C, Tadolini S, Finfinger G, Heasley K, Luo Y, eds., Morgantown, WV: West Virginia University, 2009; :248-255
NIOSH researchers designed a field study to evaluate factors influencing roof stability. The two primary goals were to evaluate (1) the long-term stability and (2) the seasonal effects on mine entries with highly moisture-sensitive roof rock. Secondary goals included: (1) evaluating some engineering controls for weak moisture-sensitive roof rock; (2) developing a case history to correlate laboratory moisture-sensitivity indices to mine roof conditions; (3) studying the mixing and infiltration of entry air into drill holes in the roof. The paper describes the study site, presents the instrumentation, evaluates the rock for moisture sensitivity through laboratory testing, presents the results from the field study, and presents the key issues determined from the study.
Image of publication Time Dependent Roof Deterioration at a Central Ohio Coal MineConference Paper - July 2009
Download PDF Document (1.27 MB)
NIOSHTIC2 Number: 20035811
Proceedings of the 28th International Conference on Ground Control in Mining, July 28-30, 2009, Morgantown, West Virginia. Peng SS, Barczak T, Mark C, Tadolini S, Finfinger G, Heasley K, Luo Y, eds., Morgantown, WV: West Virginia University, 2009; :248-255
See Also
An Analysis of Flexural Strength and Crack Width for Fiber-Reinforced Shotcrete Used in Weak Rock Mines
Considerations for Using Roof Monitors in Underground Limestone Mines in the USA
Diagnosing and Controlling Moisture-Sensitive Roof in Coal Mines
Effects of Stimulation Treatments on Coalbeds and Surrounding Strata: Evidence from Underground Observations
Geologic Hazards and Roof Stability in Coal Mines
In Situ Estimation of Roof Rock Strength using Sonic Logging
Neural Network Technology for Strata Strength Characterization
New Developments with the Coal Mine Roof Rating
Rock Falls
Roof Span Design for Underground Stone Mines
Technology News 481 - Update: Roof Monitoring Safety System for Underground Stone Mines
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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