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Practice of Fighting Fire and Suppressing Explosion for a Super-Large and Highly Gassy Mine
Authors:ZHOU Fu-bao  WANG De-ming  ZHANG Yong-jiu  ZHANG Yu-liang  LI Xiang
Affiliation:1. School of Mining and Safety Engineering, China University of Mining & Technology, Xuzhou, Jiangsu 221008, China;2. Ningxia Mining Industry Group, Yinchuan, Ningxia 750004, China
Abstract:
The Baijigou Mine fire in Ningxia Province, which broke out on October 24, 2003, affected more than 108 m3 of the mine and was probably the largest underground fire in China in recent years.In addition to its size, the fire was also characterized by excessive air leakage and the potential for violent methane explosions.A series of new measures were taken to fight the fire, including sealing intake tunnels with water, injecting three-phase foam through boreholes, and flushing with a large volume of nitrogen.The fire was successfully extinguished and production resumed soon afterwards; not one single methane explosion occurred during fire-fighting and afterwards.
Keywords:mine fire  gas explosion  fire-fighting  explosion-suppression  three-phase foam
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