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Determining Face Methane-liberation Patterns During Longwall Mining.

Authors
Cecala-AB; Jankowski-RA; Kissell-FN
Source
MISSING :9 pages
Link
NIOSHTIC No.
10004816
Abstract
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.
Publication Date
19850101
Document Type
IH; Information Circular;
Fiscal Year
1985
NTIS Accession No.
NTIS Price
Identifying No.
IC 9052
NIOSH Division
PRC;
Source Name
MISSING
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