The Research And Application Of Spontaneous Combustion Coal Seam With XiaoKang Coal Mine

This paper in tiefa mining area is a well-off coal mine soft rock extremely easy spontaneous combustion thick coal seam roadway driving safety mining technology as the background, closely combining with field practice.Analyzed the extremely soft rock mine mechanism of coal spontaneous combustion and spontaneous combustion characteristics.In view of the serious situation well-off coal seam spontaneous combustion of coal mine, studied the extremely soft rock deformation-failure of two lane full face strong support of new technology, at the same time of increase the support strength, improve the supporting layer of sealing, prevent the two lane for the oxidation of coal.Put forward the deformation-failure of positive pressure ventilation retracement technology of large dip Angle, to solve the problem of the spontaneous combustion the retracement period;In extremely soft rock deformation-failure of closed questions, adjust measures to local conditions, use of shotcrete machine river sand filling closed roadways, solved the filling times filling difficult problems in the line is too large.On the management of air leakage on both ends of working face every 15m with white clay masonry 2 m long bag closed wall and block using perlite at ordinary times, prevented the working face goaf air leakage;Using high temperature point note of white mud, face the reasonable air distribution, nitrogen to effectively control the mined-out area of goaf spontaneous combustion, and remaining on working face advance degree is not less than 45 m, comprehensive prevention and treatment of spontaneous combustion technologies such as successful solved in goaf and two two lines of fire protection.To note white mud, spontaneous combustion of coal is early information monitoring, stope closed the shotcrete machine sand filling technology, to guarantee a well-off coal mine safety production has played a key role. At the same time, the 21° Angle of extremely soft rock deformation-failure of positive pressure ventilation rapid retreat technology carried out applied research, to avoid the occurrence of spontaneous combustion.