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Predicting methane emissions from longer longwall faces by analysis of emission contributors.

Authors
Krog-RB; Schatzel-SJ; Garcia-F; Marshall-JK
Source
Proceedings of the 11th U.S./North American Mine Ventilation Symposium, University Park, Pennsylvania, June 5-7, 2006. Mutmansky JM, Ramani RV. eds., London, U.K.: Taylor & Francis Group, 2006 Jun; :383-392
Link
NIOSHTIC No.
20030321
Abstract
NIOSH conducted a longwall methane emission and mining time study at a mine operating in the Pittsburgh Coalbed to access the methane emission consequences of mining a longer face. The methane emission contributors from mining a longwall face are: (1) gas released from the coal broken by the shearer, (2) gas emitted from the coal on the face conveyor, (3) gas emitted from the coal transported on the belt, and (4) background gas emitted from the coal face and adjoining ribs. Based on the results of the study, a set of site-specific mathematical formulas and constants were developed to characterize each of the four longwall emission contributors. The formulas were then applied to longer longwall face mining scenarios to predict the methane emissions from these faces.
Keywords
Mining-industry; Underground-mining; Coal-mining; Longwall-mining; Ventilation; Air-flow; Gases
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CAS No.
74-82-8
Publication Date
20060605
Document Type
Conference/Symposia Proceedings
Editors
Mutmansky-JM; Ramani-RV
Fiscal Year
2006
NTIS Accession No.
NTIS Price
ISBN No.
0415401488
NIOSH Division
PRL
Priority Area
Disease and Injury: Traumatic Injuries
Source Name
Proceedings of the 11th U.S./North American Mine Ventilation Symposium, University Park, Pennsylvania, June 5-7, 2006
State
PA
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