Numerical simulation of dust migration and study on dust removal modes with the forced ventilation shunt in a fully mechanized workface

Large concentration of coal dust exists in the fully mechanized workface due to high dust production and low dust removal efficiency.Based on fluid dynamics,the gas-solid two-phase flow theory and the jet theory,the dust migration mechanism and distribution in a roadway under far-pressing-near-suction ventilation were studied with the FLUENT software.The effects of ventilation parameters such as the air quantity of forced ventilation,the ratio of blowing to suction and the position of the force-ventilated outlet on the concentration and distribution of the dust were analyzed comparatively.A forced ventilation shunt mode was proposed,and its dust removal efficiency was simulated.