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Methane control for underground coal mines.
Hydrocarbons from Coal (AAPG Studies in Geology #38). Law BE; Rice DD, eds., Tulsa, OK: American Association of Petroleum Geologists, 1993 Jan; 38:237-267
Control technology exists that addresses many of the current mining-related methane emission problems in underground coal mines. A combination of general research results, experience, trial and error methodology, and computer-based simulations can usually provide the information necessary to select or modify appropriate methane control technology for site-specific situations. As more is learned about the occurrence, storage, and migration of coalbed methane, more effective control technologies or modifications to existing technologies will be developed. The ability to more accurately measure coalbed reservoir properties, both in the laboratory and in the field, will improve the reliability of computer-based simulations. This will lessen the reliance on trial and error methods to design site-specific methane control systems and shorten the time required for their implementation. There has been a tremendous increase over the past 10 years in the use of stimulated vertical boreholes to produce gas from coalbeds for commercial purposes. The research and experience associated with these efforts are valuable assets that can be used to improve the applicability of the technology to the mining environment. An area of particular concern for methane control in the United States is the increase in methane emissions as larger longwall panels are mined to increase productivity. As panel size increases, larger volumes of gas in the roof and floor strata are exposed to the mine atmosphere on a daily basis. Mining delays are already being experienced on some of these larger panels due to higher than expected methane emissions. Methane emission consequences must be taken into account if the mining industry is to take advantage of the potential for increased productivity from advanced mining technology.
Mining-industry; Underground-mining; Coal-mining; Methane-control; Methane-drainage; Engineering-controls; Control-technology; Simulation-methods; Computer-software; Computer-models; Mathematical-models
Book or book chapter
Hydrocarbons from Coal (AAPG Studies in Geology #38)
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Content source: National Institute for Occupational Safety and Health Education and Information Division