Fire Safety Science Digital Archive

Due to underground spaces are opened up and used in our country, the underground shops, hotels and recreational halls emerged in large numbers; Besides, the fire in the underground buildings had happened sometimes, In the view of above fire instance, the fire-pressure occured in the fire of the underground building and its expression are advanced in the article. In the meantime, on the basis of thermal exchange between the high temperature smoke in the underground passageway and the walls of the underground passageway, the equation of conservation of energy in the thermal form is built and the expression of change of temperature difference of the smoke which moves along the distance of the underground passgeway are therefore given in the article, in the meantime, a calculated table corresponded to above equation is given. According to the theoretical formula of the fire pressure and corresponded calculated table of high temperature smoke moving in the underground passageway, the thermic and smoke pollutions caused by the high temperature smoke in the passageway of the underground buildings are raised. Lastly, some corresponded countermeasures polluted by high temperature smoke to the passageway of the underground building are put forward in the paper.