Impact of Control Parameters on Shearer-Generated Dust Levels

摘要

Full scale laboratory tests are being conducted to provide information to longwall operators which would assist them in selecting control parameters that would reduce dust levels for mine-specific conditions. The interactions between face air velocity, shearer water quality, drum water spray pressure, external water spray pressure, and spray system design were evaluated in a 2.13 m (7 foot) coal seam for two cutting directions. Locations around and downwind of the shearer were monitored to evaluate relative changes in respirable dust levels as a function of each control parameter.