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Flow characteristics of three-phase foam in mine gob and its application

International Journal of Mining Science and Technology 2015年第5期25卷 773-778页

作者： Shi Guoqing Liu Maoxi Kong Jia Wang Deming School of Safety Engineering China University of Mining & Technology

To study the flow characteristics of three-phase foam in gob area,different perfusion experiments in coal mine gob were designed and put forward in the *** the observation of flow range,flow characteristics of three phase foam were analyzed with different flow ***,unsteady seepage process of three-phase foam was simulated with CFD *** on experiment and numerical simulation results,flow characteristics of three-phase foam and its major influence factors are discussed,and the optimal arrangement distribution of mine fire control drills is also *** results show that the flow range and stacking height of three-phase foam in gob are significantly influenced by *** vertical stacking height and horizontal diffusion distance of three-phase foam are also directly related to the flow volume of foam perfusion,the larger flow single hole perfusion volume,the higher stacking height and the longer diffusion distance could be obtained.

关键词： three-phase foam Gob area Seepage Diffusion range Numerical simulation

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Practice of Fighting Fire and Suppressing Explosion for a Super-Large and Highly Gassy Mine

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Journal of China University of Mining and Technology 2007年第4期17卷 459-463页

作者： ZHOU Fu-bao WANG De-ming ZHANG Yong-jiu ZHANG Yu-liang LI Xiang School of Mining and Safety Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China Ningxia Mining Industry Group Yinchuan Ningxia 750004 China

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 re-sumed soon afterwards; not one single methane explosion occurred during fire-fighting and afterwards.

关键词： mine fire gas explosion fire-fighting explosion-suppression three-phase foam

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