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Mining Publication: Estimating Methane Content of Bituminous Coalbeds From Adsorption Data
Keywords: Bituminous coal Methane
Original creation date: January 1977
Authors: AG Kim
Report of Investigations - January 1977
Download PDF Document (0.80 MB)
NIOSHTIC2 Number: 10000612
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8245, 1977 Jan; :1-22
The Bureau of Mines estimated the methane content of a coal, which depends primarily upon rank and pressure, from the adsorption equation V = kPn, where k and n are constants related to rank. By incorporating corrections for moisture, ash, and temperature, and estimating pressure and temperature as a function of depth, the methane content of coal in place can be estimated. Values calculated with this equation generally are in reasonable agreement with direct determinations. By assuming a standard moisture and ash content, and using the hydrostatic head to estimate pressure, a graph of rank and depth versus gas content was constructed. Although estimated values were consistently high for several high-volatile bituminous coals from an area where the pressure is known to be less than hydrostatic, the estimated methane content for most coals shows reasonable agreement with values determined by the direct method.
Image of publication Estimating Methane Content of Bituminous Coalbeds From Adsorption DataReport of Investigations - January 1977
Download PDF Document (0.80 MB)
NIOSHTIC2 Number: 10000612
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8245, 1977 Jan; :1-22
See Also
Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
Development and Application of Reservoir Models and Artificial Neural Networks for Optimizing Ventilation Air Requirements in Development Mining of Coal Seams
Frictional Ignitions in Underground Bituminous Coal Operations 1983-2005
Methane Emission from U.S. Coal Mines in 1973, A Survey: A Supplement to IC 8558
Methane Emission from U.S. Coal Mines in 1975, A Survey : A Supplement to Information Circulars 8558 and 8659
Methane Emission from U.S. Coal Mines, A Survey
Methane Emissions from U.S. Coal Mines in 1980
Methane Gas Content of the Mary Lee Group of Coalbeds, Jefferson, Tuscaloosa, and Walker Counties, Ala.
Remote Methane Sensors
Short-Delay Blasting in Underground Coal Mines
Page last reviewed: November 17, 2015
Page last updated: November 17, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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