火灾事故是发生频率较高的事故类型，它对交通枢纽的人员危害性主要体现在建筑环境中燃烧产生的烟气、毒害物质、燃烧辐射热。
Fire Accidents is one of high frequency incident types. Its personnel harm manifested mainly in the built environment in the combustion flue gas, toxins, the burning heat radiation.
火灾的危害性巨大，如果不加以控制，将会给人类生命、财产造成严重损失。
Fire disastrous is very dangerous. If unchecked, human life, property will be got great loss.
液化石油气储罐在火灾作用下，其内部的温度和压力迅速上升，从而会引起储罐爆炸，进而酿成危害性更大的二次灾害。
When LPG tanks are exposed to external fire, their temperature and pressure will increase rapidly, which may cause the tanks exploding and lead the secondary hazard with much more damage.
矿山火灾是一种危害性十分严重的矿山事故。
因次，对特长铁路隧道火灾烟气蔓延特性及危害性的研究具有十分重要的意义。
Therefore, the study on features of fire smoke spread and harmfulness of the railway tunnel is of great significance.
地震次生火灾作为地震次生灾害中发生最频繁的灾种，起火原因复杂其危害性也十分巨大。
As the most frequency post-earthquake disaster, the reason of the post-earthquake fire is sophisticate and its harm is huge.
通过对火灾重要危险源的数学分析，阐述了在大型火灾发生时期，烟气对于灾害扩大的危害性，并提出了相应的解决措施。
Through a mathematical analysis of main fire causes, the harmfulness of smoke and gas in expanding catastrophes was clarified while corresponding measures were proposed.
通过对火灾重要危险源的数学分析，阐述了在大型火灾发生时期，烟气对于灾害扩大的危害性，并提出了相应的解决措施。
Through a mathematical analysis of main fire causes, the harmfulness of smoke and gas in expanding catastrophes was clarified while corresponding measures were proposed.
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