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Prediction of longwall methane emissions: an evaluation of the influence of mining practices on gas emissions and methane control systems.

Authors
Diamond-WP; Garcia-F
Source
NIOSH 1999 Oct; :1-37
NIOSHTIC No.
20000193
Abstract
The primary purpose of this field study was to predict the methane emission consequences of mining longwall panels of greater face width in the Pochontas No. 3 Coalbed in Virginia. Mines were to be increased from 229 to 305 m (750 to 1,000 ft). However, since historically high methane emissions from the longwall face and gobs were already being experienced, there was a concern for further increases in methane emission rates. If preferables from a safety perspective to be prepared in advance, either with increased ventilation airflow, or with additional methane drainage. The bleeder and methane drainage systems associated with the two study panels were also evaluated to fully characterize the methane liberation patterns and control system performance for each study area.
Keywords
Mining-industry; Mine-gases; Methane; Emission-sources; Coal-gas; Coal-mining; Control-systems; Statistical-analysis; Monitoring-systems; Measurement-equipment; Work-practices; Longwall-mining
CAS No.
74-82-8
Publication Date
19991001
Document Type
Numbered Publication; Report of Investigations
Fiscal Year
2000
NTIS Accession No.
PB2000-101707
NTIS Price
A04
Identifying No.
(NIOSH) 99-150; RI-9649
ISSN
1066-5552
NIOSH Division
PRL
Source Name
National Institute for Occupational Safety and Health
State
PA
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