35-75 EFECTELE VENTILAȚIEI MECANICE LONGITUDINALE ASUPRA MIȘCĂRII FUMULUI DEGAJAT DE UN INCENDIU ÎNTR-UN TUNEL DE METROU
EFFECTS OF LONGITUDINAL MECHANICAL VENTILATION ON THE FIRE SMOKE MOVEMENT IN A SUBWAY TUNNEL
The smoke and toxic gases released from a subway fire contain a number of harmful elements to the human body. Thus, long-term smoke exposure is the main cause of the large number of casualties in such an event. To protect the lives of people caught by a fire in the subway, it is necessary to use smoke evacuation systems. Thus, longitudinal mechanic ventilation systems can be used. During the use of these systems, the smoke movement inside the tunnel is characterized by phenomena such as backlayering, reverse flow or bifurcation flow.
Keywords: smoke movement, subway station, backlayering, reverse flow, bifurcation flow Cuvinte cheie: mișcarea fumului, stație de metrou, intoarcerea stratului de fum, inversarea fluxului, fluxul de bifurcatie