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Mining Publication: Drainage of Methane From the Overlying Pocahontas No. 4 Coalbed From Workings in the Pocahontas No. 3 Coalbed
Keywords: Degasification Methane Virginia
Original creation date: January 1979
Authors: GL Finfinger, J Cervik
Report of Investigations - January 1979
Download PDF Document (0.95 MB)
NIOSHTIC2 Number: 10000673
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8359, 1979 Jan; :1-15
The Bureau of Mines conducted an experimental degasification project in Island Creek Coal Company Virginia Pocahontas No. 5 Mine. Methane from the overlying Pocahontas No. 4 Coalbed was entering mine workings in the Pocahontas No. 3 Coalbed through fractures in the roof rock. Small-diameter (1-5/8-inch) holes were drilled into the overlying coalbed to reduce the gas pressure and intercept methane flows, which were piped to the surface through an underground 6-inch- diam steel pipeline. The total methane flow rate from the vertical holes averaged 150,000 ft3/day for the first month. Methane flows into the mine were reduced by 47 pct, thereby demonstrating the effectiveness of this form of degasification in reducing ventilation requirements and providing a safer working environment.
Image of publication Drainage of Methane From the Overlying Pocahontas No. 4 Coalbed From Workings in the Pocahontas No. 3 CoalbedReport of Investigations - January 1979
Download PDF Document (0.95 MB)
NIOSHTIC2 Number: 10000673
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8359, 1979 Jan; :1-15
See Also
A CART Technique to Adjust Production from Longwall Coal Operations under Ventilation Constraints
Coal Mine Methane: A Review of Capture and Utilization Practices with Benefits to Mining Safety and to Greenhouse Gas Reduction
Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
Historical Development of Technologies for Controlling Methane in Underground Coal Mines
Methane Control by Isolation of a Major Coal Panel - Pittsburgh Coalbed
Methane Gas Content of the Mary Lee Group of Coalbeds, Jefferson, Tuscaloosa, and Walker Counties, Ala.
A Numerical Evaluation on the Effects of Impermeable Faults on Degasification Efficiency and Methane Emissions During Underground Coal Mining
Removing Methane (Degasification) from the Pittsburgh Coalbed in Northern West Virginia
Rotary Drilling Techniques Used in the Beckley Coalbed
Underground Gob Gas Drainage During Longwall Mining
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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