Determining face methane-liberation patterns during longwall mining. Information circular/1985
As deeper seams are continually mined, methane liberation will continue to increase and must be monitored effectively. To effectively monitor and develop appropriate control technology, methane-liberation patterns must be known. The Bureau of Mines recently completed a study to identify specific patterns of face methane liberation during longwall mining. Both of the longwall faces surveyed had high methane liberation rates. At one longwall face, most of the methane was liberated during cutting of coal by the shearer mining machine. At the second face, a significant portion of methane was emitted from the face and floor. An effective methane-monitoring system would be different for each longwall panel because of the differences in how the gas is released along the face.
- Research Organization:
- Bureau of Mines, Pittsburgh, PA (USA). Pittsburgh Research Center
- OSTI ID:
- 5858087
- Report Number(s):
- PB-86-156445/XAB; BM-IC-9052
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
012000 -- Coal
Lignite
& Peat-- Mining
016000* -- Coal
Lignite
& Peat-- Health & Safety
ALKANES
COAL DEPOSITS
FIRE HAZARDS
GEOLOGIC DEPOSITS
HAZARDS
HYDROCARBONS
LONGWALL MINING
METHANE
MINERAL RESOURCES
MINING
MONITORING
ORGANIC COMPOUNDS
RESOURCES
UNDERGROUND MINING