Simulation and analysis of airflow stability during fire in mine belt roadway

摘要

According to fluid dynamics analysis during the fire, the criteria k-ε two-equationmodel for solving three-dimensional turbulence was determined, the pollutants generatedin the fire disaster were set by adopting Mixture multiphase flow, and the SIMPLE algorithmwas used for solving on the basis of comprehensive consideration on the heat radiationand components transmission during fire.By simulating the airflow flowing state insidethe tunnel during fire disaster of downward ventilation, drift ventilation, and ascensionalventilation, respectively, with regard to the actual situation of No.1, No.3, and No.5 beltroadway in Kongzhuang Coal Mine, the velocity vector distributions of pollutants underdifferent inlet air volumes were obtained, and the damage degree and influential factors ofdisaster were also clear, which is helpful to control and avoid disaster during belt roadwayfire.