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随着经济发展和城市用地的紧缺,我国各大城市纷纷建筑地下工程,对市区黄金地段进行立体开发利用。这些工程一方面繁荣市场经济,一方面还可作为城市交通设施的组成部分。然而在地下商业建筑中,由于其特殊的建筑形式,一旦发生火灾,温度上升很快,火灾蔓延迅速。由于缺氧而呈现不充分燃烧,产生大量含一氧化碳等毒气的浓烟。它既能使人缺氧窒息或中毒,又能使环境的能见度降低,给人员安全疏散造成困难。因此本文对地下商业建筑的火灾危险性特征进行研究,并相应的提出防火设计措施。
With the economic development and the shortage of urban land, major cities in our country have built underground projects in succession, and developed and utilized the urban prime locations. These projects, on the one hand, prosper the market economy and on the other hand, can also form part of urban transport facilities. However, in underground commercial buildings, due to its special architectural form, in the event of a fire, the temperature rises rapidly and the fire spreads rapidly. Due to lack of oxygen and showed inadequate combustion, resulting in a large amount of smoke containing carbon monoxide and other toxic gases. It can not only make people suffocated or hypoxia poisoning, but also to reduce the visibility of the environment, to the safety of personnel evacuation caused difficulties. Therefore, this paper studies the fire risk characteristics of underground commercial buildings, and puts forward corresponding fire prevention design measures.