U型通风采空区遗煤最短自然发火期研究

In order to grasp the shortest spontaneous combustion period of the coal in mined-out area with u type air ventilation, by analyzing the comparative analysis of the determination methods of coal spontaneous combustion period, determine period calculation model of the shortest spontaneous combustion; and for example by Suntuan coal mine, determine the tenth coal samples at different temperature sections of velocity of consuming oxygen, water loss rate, analysis of gas content，sectional calculation, then sectional calculating the critical temperature is reached in time of need，to determine shortest spontaneous combustion period of the tenth coal seam，to provide a basis for the formulation of the fire prevention and extinguishing measures.