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Longwall dust control by water infusion.
Cervik-J; Sainato-A; Baker-E
Min Eng 1985 Feb; 37(2):149-153
In Europe, water infusion is used widely to reduce generation of respirable dust during mining. Its use in the United States is limited to a few plow operations in the deeper parts of the Pocahontas No. 3 Coalbed. The technology for infusing water into retreating longwalls is described, and results of a recent Bureau of Mines test in the lower Sunnyside coalbed demonstrated dust reductions ranging from 47% to 64%. Because water infusion increases moisture content of the coalbed, face air velocities in excess of 2.5 M/s(500 fpm) are possible, further diluting dust levels before dust entrainment occurs. An economic analysis shows a 23% reduction in operating costs, when coal production is increased by changing from unidirectional to bidirectional mining with water infusion.
Mining-industry; Underground-mining; Coal-mining; Dust-suppression; Dust-control; Respirable-dust
OP; Journal Article
Issue of Publication
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division