Abstract:
Based on combustion theory and actual mining conditions in Shendong Mining Area, on the basis of analyzing the mining characteristics of close distance coal seam group with thick unconsolidated layers and thin bedrock shallow buried depth in Shendong Mining Area, the paper proposes the unique mining deployment characteristics of Shendong Mining Area, provides the factors that are against to the spontaneous combustion prevention and control in Shendong Mining Area, analyzes the common features of spontaneous combustion of Shendong Mining Area and its connection, and the practice of prevention and control for spontaneous combustion was carried out. The results show that the existing common problems of spontaneous combustion in Shendong Mining Area include: serious air leakage of surface, jointed lane and coal seams, much more residual coal in partial region of gob, easier spontaneous combustion after dredging and draining water in overburden gob area, working face with low oxygen and transfinite CO hidden danger at air return corner, the surrounding small coal mine threatening mine safety in production; the implementation of the comprehensive fire prevention and control measures solve the problems of goaf spontaneous combustion.