The Smoke Spread Rule under Different Longitudinal Wind Speed in the Case of Fire in a Blocked Tunnel

Abstract

In recent years the development of the field of underground transportation is entering a new era. At the same time the loss caused by the tunnel fire is also incalculable. In the case of fire, its complex interior, less entrances and exits, and long evacuation routes bring great difficulties to the evacuation of people, often causing significant casualties and property losses. In this paper, FDS will be used to study the smoke spreading law of the tunnel with train blockage in terms of no mechanical ventilation and different ventilation speeds in different fire source locations. The results show that the critical wind speed of the tunnel with train blockage is lower than that of the tunnel without train blockage.