본선터널 제연시스템 유무에 따른 대심도 역사 승강장 연기분포 분석

Fire safety measures in the deeply underground subway station have been the subject of interest on an ongoing basis. The distribution of smoke in the deeply underground station is analyzed with and without the main tunnel ventilation system. In the lobby, air supply is 42,126m³/h, exhaust is 23,160m3/h. Air exhaust is 276,094m³/h in the platform. The main tunnel ventilation fan is operated with capacity of 117m³/h. Ventilations of the first and second floor lobby were modeled as the 94 square shapes of 0.6m(x)X0.6m(y). Ventilation diffusers in platform were modeled as the 222 square shapes of 0.6m(x)X0.6m(y) and the 4 rectangular shapes of 1.2m(x)X0.8m(y). Comparative analysis of CO concentration in the platform with and without main tunnel ventilation fan is performed. LES(Large Eddy Simulation) of the FDS is employed and parallel processing by MPI is used.