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Cross-measure borehole technology for gob gas control.
McCall-FE; Campoli-AA; Cervik-J; Burns-F; Thakur-P
Min Eng 1984 Dec; 36(12):1672-1676
Methane enters mine workings from adjacent strata and the mined coalbed. In longwall operations, the primary sources of methane are the coalbeds, sandstones, and shales that comprise the overlying strata. As shallower reserves of coal are depleted, new mines will be opened under deeper cover, where both the surrounding strata and the mined coalbed are likely to be more gassy. At present, ventilation and surface gob holes are common methods of controlling gob gas. Surface gob holes cannot always be drilled because mining may be under populated areas, topography may be too severe, or access to drilling sites may be denied. New methods of gob gas control need to be developed that are independent of the mine ventilation system and surface gob holes. This paper describes joint efforts by the U.S. Bureau of Mines and the mining industry to adapt European cross-measure borehole technology for methane drainage to retreat longwall mining in the United States.
Mining industry; Underground mining; Underground mines; Mine gases; Methane control; Coal mines; Coal mining
OP; Journal Article
Issue of Publication
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division