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Ventilation Eddy Zones At a Model Coal Mine Working Face.
MISSING :14 pages
Tracer gas decay curves were experimentally obtained in a fullscale model coal mine working face area. The concentration of tracer gas was found to decay in exponential fashion but with a change in slope. This change in slope is attributed to eddy zones in the face area. A simple theory was developed that allows one to calculate the approximate amount of gas in the eddy zones and thus estimate the size of the eddy zones.
IH; Report of Investigations
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division