Experiment and numerical simulation were performed to research the possibility of adopting different
ventilation modes for smoke confinement in a subway station fire accident. Bench scale experiments
were conducted in a 1:50 scale model of a subway station. Fire Dynamics Simulator software (FDS)
was utilized to carry out numerical simulations, which conducted in a full scale subway station.
Experiment result agreed well with simulation result and the research showed that the different ventilation
mode had different efficacy of smoke confinement released by the fire in basement 2. In addition,
when the USME ventilation mode was adopted and there were smoke exhausted from basement 2 and air
supplied into the basement 1, the efficacy of smoke confinement was the best. According to these cases
conducted in this paper, the layouts of the ventilation vents had little influence on the efficacy of smoke
confinement. Once the HRR was too big, the concentration would pass 50 PPM and the amount of
exhausted smoke should be increased.