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Gas migration characteristics of coalbeds.

Authors
Hadden-JD; Sainato-A
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, TPR-12, :1-10
NIOSHTIC No.
10000177
Abstract
The Bureau of Mines conducted drilling studies in the Pocahontas No. 3, the Pittsburgh , and a western coalbed to establish the gas migration characteristics for each. Gas pressures in the Pittsburgh coalbed were about 260 lb/in2 and in excess of 550 lb/in2 in the Pocahontas No. 3. Caving in drillholes prevented pressure measurements in the western coalbed. The Pittsburgh coalbed contained intersecting "clay veins" which formed gas pressure cells . Although these geological features hamper mining, they can be used t o control the flow of methane into a mine working. Methane control techniques are proposed for the Pittsburgh and Pocahontas No. 3 coalbeds.
Keywords
Mine-gases; Mining-industry; Methanes; Methane-drainage; Methane-control; Explosive-gases; Explosive-atmospheres; Underground-mining; Coal-mining; Control-technology; Engineering-controls
CAS No.
74-82-8
Publication Date
19690101
Document Type
IH
Fiscal Year
1969
NTIS Accession No.
NTIS Price
Identifying No.
TPR-12
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, TPR-12
State
PA
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