Abstract:

According to a lot of research data and theoretical results, studied the management methods of coal gangue heap, combined with treatment engineering of the coal gangue heap at Sang Shuping Coal Mine, studied the spontaneous combustion control method. Indoor and field tests suggest that, when grouting extinguishing fire technology is adopted, added a certain proportion of limestone in clay as the grouting extinguishing fire material would have better effect, clay with lime preparation of slurry concentration and the proportion in this article has good stability and rheology though engineering practice, and they can be used as the reference for other management engineerings. Good governance shows that spontaneous combustion coal gangue was eliminated thoroughly and never reburns, obtained lots of ecological benefits, social and economic efficiencies.

Key words: coal gangue, spontaneous combustion, extinguishing fire by grouting, technological parameter, treatment effect