Details:

Personal Author:
Popp, John T. ; McCulloch, C. M. (Charles M.)
Popp, John T. ; McCulloch, C. M. (Charles M.) Less -
Corporate Authors:
United States. Bureau of Mines.
Description:
"This Bureau of Mines study reviews the geological factors that affect methane in the Beckley coalbed in southern West Virginia, including overburden, coalbed structure, type of and changes in lithology above and below the Beckley coalbed, and presence of fractures in the coal and rock adjacent to Beckley. Depending on the depth, the Beckley coalbed emits from 216 to 520 ft3 of methane per ton of coal mined, and the Bureau estimates that methane emission in a deep, extensively developed mine in this area may exceed 3,000 ft3 per day per ton of coal mined. Average face cleat and butt cleat trends in the Beckley coalbed measured underground are N 33 deg. W and N 53 deg. E, respectively. Close cleat spacing contributes to the friable nature of the Beckley and provides easy movement for methane and water. Because rider coals, splits, and carbonaceous shales may contribute methane to mine emissions, predictions of methane emission based on gas content of the Beckley coalbed alone may be conservative. Beckley coalbed reserves in the study area are 234 million tons. The gas content of the Beckley coalbed averages 407 ft3/ton, and the coalbed gas reserves are 108 billion ft3." - NIOSHTIC-2

NIOSHTIC no. 10000630


Subject:
[+]
Methane.
Mining Geology.

Series:
Report of investigations (United States. Bureau of Mines) ; 8137
Document Type:
Report
Place as Subject:
West Virginia
Collection(s):
National Institute for Occupational Safety and Health
Main Document Checksum:
[+]
urn:sha256:458ada8cf0268cc12c569b11526e21f7b4691c272ae8cd5f51ad3534f115503e
File Type:

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