Abstract: The fluid dynamics software is adopted to do simulation research on the ventilation flow field of drivage roadway coal face and analyze the influence of restricted jet structure parameters such as the location and wind velocity of air duct export, distance between air duct export and working face, aspect ratio of drivage roadway cross section to ventilation flow field. The research results show that, the air duct export should be located in the apex angle of drivage roadway so as to increase the effective range of jet. The wind velocity of air duct export has little impact on the central axis wind velocity of drivage roadway under the conditions of the same of the air duct diameter. The distance between air duct export between drivage roadway cross section has little impact on ventilation flow field within the effective range. Besides that, the larger aspect ratio of the drivage roadway cross section, the better adhesion effect on the jet.

Key words: Drivage roadway, Forced ventilation, Restricted jet structure parameters, Ventilation flow field