CONVECTION VENTILATION IN TUNNEL WITH CHIMNEY AND VENTILATION DUCT WITHOUT POWER

摘要

PURPOSE: A tunnel ventilation method without power using natural convection which uses a chimney and a ventilator is provided to ventilate a tunnel using a temperature difference between the top end of a duct and a tunnel. CONSTITUTION: A tunnel ventilation method without power using natural convection which uses a chimney and a ventilator is as follows. Chimneys(1) re formed in one end or both ends of the entrance of a road tunnel. Sealed ducts(2) are connected to the bottom of the chimneys. The ends of the ducts are opened at the center of the tunnel and are hung on a tunnel crown.