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Mining Publication: Comparative Analysis of Moisture Sensitivity Index Tests for Coal Mine Roof
Keywords: Weak rock Weatherability tests
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: February 2009
Authors: TM Klemetti, GM Molinda
Conference Paper - February 2009
Download PDF Document (0.21 MB)
NIOSHTIC2 Number: 20035143
2009 SME Annual Meeting and Exhibit, February 22-25, Denver, Colorado, preprint 09-068. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2009; :1-5
Moisture deterioration of clay-rich roof rocks causes high numbers of roof falls in coal mines in humid summer months. Rocks with high moisture content are generally weaker and can further deteriorate when subjected to wetting and drying cycles. As a result, it is important to evaluate the moisture-sensitivity of roof rock prior to mining. The National Institute for Occupational Safety and Health (NIOSH) has evaluated three moisture-sensitivity index tests on roof rocks from 23 U.S. coal mines. The three tests were the University of Kentucky Weatherability test (Weatherability test), the Consol Energy Water Sensitivity test (Water Sensitivity test), and the NIOSH Immersion test (Immersion test). Of these three tests, the Weatherability and Water Sensitivity tests are more reliable in classifying the moisture-sensitivity of roof rocks.
Image of publication Comparative Analysis of Moisture Sensitivity Index Tests for Coal Mine RoofConference Paper - February 2009
Download PDF Document (0.21 MB)
NIOSHTIC2 Number: 20035143
2009 SME Annual Meeting and Exhibit, February 22-25, Denver, Colorado, preprint 09-068. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2009; :1-5
See Also
An Analysis of Flexural Strength and Crack Width for Fiber-Reinforced Shotcrete Used in Weak Rock Mines
Anchorage Pull Testing for Fully Grouted Roof Bolts
A Correlation Between Seismic Tomography, Seismic Events and Support Pressure
Diagnosing and Controlling Moisture-Sensitive Roof in Coal Mines
Early Strength Performance of Modern Weak Rock Mass Shotcrete Mixes
Field Performance Testing of Fully Grouted Roof Bolts
The Ground Response Curve, Pillar Loading and Pillar Failure in Coal Mines
Identifying Moisture Sensitive Roof Rocks in Coal Mines
Neural Network Technology for Strata Strength Characterization
Rock Falls
A Static Fatigue Constitutive Law for Joints in Weak Rock
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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