Effect of a surface borehole on longwall gob degasification (Pocahontas No. 3 Coalbed)

Moore, T. D.; Zabetakis, Michael George, 1924-

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Effect of a surface borehole on longwall gob degasification (Pocahontas No. 3 Coalbed)

1972
By Moore, T. D. ; Zabetakis, Michael George, 1924-
Series: Mining Publications

[PDF-2.44 MB]

English

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Personal Author:

Moore, T. D. ; Zabetakis, Michael George, 1924-

Moore, T. D. ; Zabetakis, Michael George, 1924- Less -
Corporate Authors:

United States. Bureau of Mines.
Description:

"The use of a partially slotted 6.5-Inch-inside-diameter vertical pipe to remove methane from a longwall gob area at a depth of 2,260 feet in the Pocahontas No. 3 Coalbed was investigated. The value of gas removed by such a pipe under free-flow conditions was found to equal the cost of the installation in this case. Approximately 25 percent of the available methane passed through the pipe without the use of an exhauster; an additional 10 percent was removed when an exhauster was employed. The diversion of methane through a vertical slotted pipe to the surface permitted the use of increased mining rates and decreased the ventilation air requirements." - NIOSHTIC-2

NIOSHTIC no. 10000672
Subjects:

[+]

Boring. Methane. Mine Ventilation.
Series:

Mining Publications
Subseries:

Report of Investigations
Document Type:

Text
Genre:

Report
Pages in Document:

9 numbered pages
NIOSHTIC Number:

10000672
Resource Number:

RI-7657
Collection(s):

National Institute for Occupational Safety and Health
Main Document Checksum:

[+]

urn:sha-512:39fa8ce884e3f2c3b6918870c73f5a2f2e5c2a7b9c85b4aebfd4612e4d631c665da7b12274cb50aaa91d8df1fa4abcc8c894945601b6bd7aa01e4a3a5db11781
Download URL:

https://stacks.cdc.gov/view/cdc/9213/cdc_9213_DS1.pdf
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Effect of a surface borehole on longwall gob degasification (Pocahontas No. 3 Coalbed)

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