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公路隧道火灾情况下风压场变化的模型试验研究

, PP. 60-63

Keywords: 公路隧道,火灾,风压场

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Abstract:

公路隧道发生火灾时,对隧道安全构成威胁的是烟流和温度的扩散,而烟流和温度的扩散速度主要依赖于风流速度,影响风流速度的主要因素是风压。由于隧道火灾产生的烟流节流效应阻力、烟流摩擦阻力、烟流浮力效应的作用,使隧道内风压发生很大的变化,因此,研究风压的变化规律对救援和通风方案的制定有着极其重要的意义。

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