Long-term analysis of a sealed mine post-fire atmosphere.
Proceedings of the 23rd International Conference of Safety in Mines Research Institutes, September 11-15, 1989, Washington, DC. Washington, DC: U.S. Bureau of Mines, OFR 27-89, 1989 Sep; :438-450
In early June, 1986, an underground fire of unknown origin erupted in one of several entries of a coal mine located in southwestern Colorado. For a time mine personnel aggressively fought the fire, but because of a lack of extinguishing foam, control of the fire was lost. To prevent further damage and to reduce the possibility of an explosion, all portals and shafts to the mine were sealed. The mine operator requested the Bureau of Mines ' assistance in obtaining and analyzing mine fire gases taken from sampling ports placed through the mine seals, as well as down boreholes drilled after the fire. This report recounts activities within the first two years that the mine was sealed. It includes a description of gases analyzed as well as mine atmosphere status equations generated from the analyzed gases. The gases were analyzed by chromatography and included standard atmospheric gases as well as higher hydrocarbons that are found in post-fire atmospheres. Nine equations were used to evaluate what was occurring within the sealed mine.
Mine fires; Mining; Mining industry; Underground mining; Underground mines; Coal mines; Coal mining; Mine gases
CP; Conference/Symposia Proceedings
NTIS Accession No.
OFR 27-89; OP 25-90
Proceedings of the 23rd International Conference of Safety in Mines Research Institutes, September 11-15, 1989, Washington, DC