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Methane emission rate study in a deep Pocahontas No. 3 coalbed mine in conjunction with drilling degasification holes in the coalbed.

Authors
Krickovic-S; Kalasky-JD
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7703, 1972 Jan; :1-12
NIOSHTIC No.
10000619
Abstract
A degasification experiment was conducted in a Pocahontas No. 3 Coalbed mine in Virginia. It involved (1) drilling holes in the coalbed in the outside headings of a set of five being developed in virgin area and (2) conducting a methane emission rate study as mining progressed and additional holes were drilled. Degasification from all drill holes except the longest in each of the outside headings and the first three drilled (excluding the in situ pressure hole) was erratic and inconsequential in methane emission rates. The two longest holes liberated 66 and 79 cfm of methane, which is significant for the coalbed, but such quantity lasted a relatively short time; the first three were uniform but low in methane emission.
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
19720101
Document Type
IH; Report of Investigations
Fiscal Year
1972
NTIS Accession No.
PB-214221
NTIS Price
A03
Identifying No.
RI-7703
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7703
State
PA; VA
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