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Keeping tabs on roof pressure changes in underground coal mines.
Coal Age 1986 Jun; 91(6):1
The U.S. Bureau of Mines has developed a simple and effective instrument for measuring mining-induced pressure changes in coal mine roof and pillars. The system, which is easy to fabricate and install, has been used successfully to (1) measure roof tension and pillar load transfer associated with in-mine subsidence from the mining of multiple coal seams, (2) monitor pillar pressures, during retreat mining, and (3) verify the beam effect of mine roof near clastic dikes and roof cutters. Other possible uses include coal mine bump investigations, measurement of gate road and abutment pressures associated with longwall mining, and investigation of roof problems created by geologic anomalies.
OP; Journal Article
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Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division