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Comparison of methane concentrations at a simulated coal mine face during bolting.

Authors
Taylor-CD; Thimons-ED; Zimmer-JA
Source
Proceedings of the Eighth US Mine Ventilation Symposium, Rolla, Missouri, June 11-17, 1999. Rolla, Missouri: University of Missouri-Rolla Press, 1999 Jun; :1-8
Link
NIOSHTIC No.
20027463
Abstract
Strategies for monitoring methane levels during roof bolting in an extended cut entry were evaluated. Testing was conducted at the Pittsburgh Research Laboratory's methane test gallery. Operating conditions were varied and methane releases at the face and drill holes were simulated. Methane readings were taken at the face, and at locations outby the face. Results show that, when the major source of methane was at the drill holes, the highest methane readings were at locations on, or 6.1m inby the bolting machine. Methods for selecting better outby sampling locations, when the majority of the methane is released at the face, are examined. During roof bolting, ti is easier to sample at these outby locations rather than at the face. Further testing is needed to determine what relationship exists between methane concentration at the outby locations and at the source of the methane release.
Keywords
Mine-shafts; Mine-gases; Ventilation-systems; Ventilation-equipment; Methanes; Coal-miners; Coal-mining; Coal-workers; Mine-workers; Miners; Mining-industry; Methanes; Monitoring-systems; Sampling; Underground-miners; Underground-mining
CAS No.
74-82-8
Publication Date
19990611
Document Type
Conference/Symposia Proceedings
Editors
Tien-JC
Fiscal Year
1999
NTIS Accession No.
NTIS Price
ISBN No.
1887009043
NIOSH Division
PRL
Source Name
Proceedings of the Eighth US Mine Ventilation Symposium, Rolla, Missouri, June 11-17, 1999
State
PA; MO
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