Distribution of three zones of spontaneous combustion in gob with lower entry retained along the gob
CT101 of Wugou Coal Mine is a fully mechanized longwall.The goaf is filled with gangue.Along the gob side the lower entry is retained by constructing a piled wall of trapezoidal gangue bags.The retained entry is ventilated by a local fan with positive pressure.In order to understand the three zones distribution in the gob so as to provide the basis for fire prevention, temperature probes and gas exhausting pipes were embedded in the gob along the upper entry and behind supports.Temperature and oxygen concentration at different sites were obtained.Based on the rate of temperature rise and oxygen concentration changes, three zones features in the gob were obtained: The three zones change fast with time.The heat dissipation zone is very narrow, the widest position of the heat dissipation zone and the oxidation zone are in the triangle strip formed by hydraulic supports and the wall of gangue bags.
mine fires spontaneous combustion fire in gob
YUAN Shu-jie ZHANG Xiao-jian ZHU Cheng-tao SHAO Long-qing
School of Energy and Safety, Anhui University of Science and Technology, Huainan 232001, China;Key Laboratory of Safety and High-efficiency Coal Mining, Ministry of Education, Anhui University of Science and Technology, Huainan 232001, China
国际会议
International Mining Conference 2014(2014国际采矿论坛)
安徽淮南
英文
288-291
2014-09-19（万方平台首次上网日期，不代表论文的发表时间）