Study on Ventilation Technology for Drivage of Long-distance Blind Headway

In this paper,a ventilation scheme for drivage of a long-distance blind roadway was proposed according to the conditions at the construction site of a tunnel.Forced ventilation was selected and one-stop ventilation was adopted through the comparison of the advantages and disadvantages of forced ventilation,exhaust ventilation and overlap auxiliary ventilation;large-diameter air duct and multi-stage tunneling fan were used,and the ventilation distance was up to 15 km.The use of forced ventilation can directly supply fresh air to the heading face to meet the ventilation demand for tunnel construction.