Research on Division Technology of"Three Zones"of Spontaneous Combustion in Goaf of Composite Roof Coal Seam
In response to the problem of Jurassic composite roof easily falling off and exposing coal lines in the 113107 working face of Bojianghaizi mine,and the possibility of coal seam spontaneous combustion caused by residual coal oxidation,laboratory experiments,numerical simulations,and on-site monitoring methods were comprehensively used to study the"three zones"of spontaneous combustion and fire prevention and extinguishing technology in the goaf of 113107 working face.The research has obtained the indicator gas and critical value of coal spontaneous combustion,providing early warning indicators for predicting coal seam spontaneous combustion;The distribution range of the"three zones"of spontaneous combustion in the goaf of working face 113107 has been determined;providing a reference for the research of fire prevention and control safety technology in similar projects.
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