| With the population of the city in the world quickly increasing, more and more vehicles bring out such problems: the traffic jam, the pollution of the environment and energy crisis, etc. The traditional transportation such as buses and trolley bus will be abandoned. Because of the big carrying saving energy, subway is soon developing. In a word, the country in the world has paid more and more attention on developing subway in order to ameliorate the traffic jam.Because the subway environment differs from that in the building, also is not the same as that of underground building, therefore, this problem has become the focus. A lot of scholars at home and abroad have done searches on smoke spreading principle, temperature field, and smoke field. While there are only few researches on the escaping pedestrian. Current studies on the escaping pedestrian, some are only the concrete temperature or the CO density, or is the visibility absolute value, some, although has considered the time influence on the temperature, and some on the smoke, but has not considered the impact of them together.A physical model of a two-layer and island type subway station is established in the paper, which has studied the flow field distribution as well as the haze density field distribution in detail on the different subway station environment wind speed and the different fire hazard. This article also studies the same situation of the tunnel, in the numerical simulation research's foundation, revision FED which proposed by this article loses ability mold behavior distinction condition, has obtained when the different subway environment, tunnel different position personnel's biggest security escaping time, 1min after the fire, the downstream personal security escapes the position and has the region which the possibility escapes.This article findings to formulate grow up time the subway fire's personnel to escape the rescue plan, has provided the important technical support. |
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