Computational Fluid Dynamics Simulation of Oxygen Seepage in Coal Mine Goaf with Gas Drainage

Table 1

Physical and chemical parameters of the coal.

Density of the coal (kg·m^3)	1300
Activation energy (Kj/(mol·K))	90.0
Thermal conductivity of coal W/(m·K)	0.1998
Heat release when coal absorbs one Moore oxygen (Kj)	310
Preexponential factor (s^−1)	64
Initial temperature (K)	300
Specific heat capacity (J·kg^−1·K)	1003