Simulation and Analysis on Breathing of Gob

Based on the establishment of three-dimensional spontaneous combustion prediction model for the gob of fully-mechanized caving face,numerical simulation on the breathing of the gob of fullymechanized caving face of high-gassy coal seam was conducted by using numerical simulation software under gas drainage condition,Three-zones of spontaneous combustion of coal were divided according to the simulated results,and the dangerous zone and degree of spontaneous combustion of float coal in the gob of this face were also analyzed,which can be used to guide the prevention and control work of spontaneous combustion of float coal in the gob of the face with similar conditions.