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Smoke reversal interaction with diagonal airway - its elusive character.

Authors
Edwards-JC; Friel-GF; Yuan-L; Franks-RA
Source
Trans Soc Min Metal Explor 2006 Jan; 320:149-156
NIOSHTIC No.
20031788
Abstract
The reversal of smoke products-of-combustion (POC) from a mine fire was determined in a mine section with the airway connectivity of an electrical Wheatstone bridge. Four diesel-fuel fire experiments with fire heat-release rates between 504 and 771 kW were conducted in the Safety Research Coal Mine (SRCM) located at the National Institute for Occupational Safety and Health's (NIOSH) Pittsburgh Research Laboratory (PRL). Smoke reversal propagated upwind from the fire with significant leakage into the upwind diagonal airway and without causing a complete reversal of airflow in the diagonal airway. A control measure consisting of a brattice suspended half entry height from the entry roof was determined to abate the smoke rollback. Computational fluid dynamics (CFD) analysis of the smoke movement agreed with the measurements.
Keywords
Mining-industry; Ventilation-systems; Ventilation; Smoke-control; Mine-fires
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CODEN
TMENAE
Publication Date
20060101
Document Type
Journal Article
Editors
Yernberg-WR
Fiscal Year
2006
NTIS Accession No.
NTIS Price
ISBN No.
0873352556
ISSN
1075-8623
NIOSH Division
PRL
Source Name
Transactions of the Society for Mining, Metallurgy, and Exploration
State
PA
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