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The inclination effect on CO generation and smoke movement in an inclined tunnel fire

机译：倾斜对隧道火灾中一氧化碳产生和烟气运动的影响

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摘要

The study of the tunnel's inclination effect on the fire in an inclined tunnel is of vital importance to the evacuation of people during a conflagration in a tunnel. When a fire emergency happens in an inclined tunnel, the inclination affects, the temperature, the visibility, the thickness of carbon monoxide (CO), and the movement of the smoke. In this paper, the inclination effect is studied in terms of the CO concentration and the smoke movement pattern in an inclined tunnel fire. A series of experiments are conducted with the inclination angles varying from -10° to 10° to the horizontal and with n-Heptanes pool fires in three pans of various sizes. It is found that the CO concentration is negatively correlated with the inclination angle and the thickness of smoke layer and the smoke outflow rate are both positively correlated with the inclination angle. Those negative and positive correlations also suggest a negative correlation between the CO concentration and the smoke layer thickness or smoke outflow rate.
机译：研究隧道的倾斜度对倾斜隧道中的火灾的影响对隧道发生火灾时疏散人员至关重要。在倾斜的隧道中发生紧急火灾时，倾斜度会影响温度，能见度，一氧化碳（CO）的厚度以及烟雾的移动。本文从倾斜隧道火灾中的CO浓度和烟气运动方式研究了倾斜效果。进行了一系列实验，其中相对于水平的倾斜角度在-10°到10°之间变化，并在三个不同尺寸的锅中使用正庚烷池火。发现CO浓度与倾斜角呈负相关，烟雾层的厚度和烟气的出气速度均与倾斜角呈正相关。这些负相关和正相关也表明CO浓度与烟雾层厚度或烟雾流出速率之间呈负相关。

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  • 来源
    《Tunnelling and underground space technology》 |2012年第2012期|p.78-84|共7页
  • 作者

    Jialei Zhang; Xiaodong Zhou; Qinkun Xu; Lizhong Yang;

  • 作者单位

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    inclined tunnel; fire; scaled model; CO; smoke movement;

    机译：倾斜隧道火;比例模型一氧化碳烟雾运动;

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