Abstract: In response to the risk of spontaneous combustion of coal in the 15^# coal seam of Wangyun Coal Mine,which is classified as a Class II spontaneous combustion coal seam,during and after the mining process in the fully mechanized mining face,various parameters of the 15^# coal sample were measured to determine the parameter indicators of the coal under experimental conditions.The ventilation parameters and air leakage laws of the working face were verified by on-site actual wind measurement.Through numerical simulation technology and O₂ index gas concentration field model simulation,the high-temperature area was delineated,and the specific range of the "three zones" of spontaneous combustion in the goaf of the 15106 working face was determined.Based on the original fire prevention and extinguishing measures,the specific amount of yellow mud grouting and inhibitor spraying were further determined to ensure the normal mining of the 15106 fully mechanized mining face,and provide technical support and practical experience for future fire prevention and extinguishing work in the mine.