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| 纵向风速对隧道内烟气发展影响的实验研究 | |
| 引用本文： | 张靖岩,王婉娣,彭伟,霍然,李炎锋.纵向风速对隧道内烟气发展影响的实验研究[J].中国安全生产科学技术,2010,6(1):17-20. |
| 作者姓名： | 张靖岩 王婉娣 彭伟 霍然 李炎锋 |
| 作者单位： | 1. 中国建筑科学研究院建筑防火研究所,北京,100013 2. 安徽理工大学能源与安全学院,淮南,232001 3. 中国科学技术大学火灾科学国家重点实验室,合肥,230027 4. 北京工业大学建筑工程学院,北京,100124 |
| 基金项目： | 国家自然科学基金项目(编号:50878012);;中国建筑科学研究院自筹基金项目(编号:20070111330730002) |
| 摘 要： | 通过在鹰嘴岩隧道内的现场模拟火灾试验,对不同纵向通风速率下隧道内烟气发展过程进行了研究。结果表明,纵向风速和火源大小均对烟气层沉降有重要影响。相比之下,纵向风速对烟气层沉降的影响更大;火源位置较高时,烟气层热膨胀力较大,在距离火源一定距离外仍可产生上游方向的烟气逆流;一定坡度的隧道在某种条件下可以产生"弱烟囱效应",导致烟气向下游方向的流速增加。在隧道设计中可以考虑利用这一点来增加排烟效率。 |
| 关 键 词： | 隧道 火灾 烟气层高度 纵向风速 |
Experimental study on the effect of longitudinal ventilation on smoke development in tunnels |
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| ZHANG Jing-yan,WANG Wan-di,PENG Wei,HUO Ran,LI Yan-feng.Experimental study on the effect of longitudinal ventilation on smoke development in tunnels[J].Journal of Safety Science and Technology,2010,6(1):17-20. | |
| Authors: | ZHANG Jing-yan WANG Wan-di PENG Wei HUO Ran LI Yan-feng |
| Institution: | 1.Institute of Building Fire Research/a>;China Academy of Building Research/a>;Beijing 100013/a>;China;2.Anhui University of Science & Technology/a>;Huainan 232001/a>;China;3.State Key Laboratory of Fire Science/a>;University of Science and Technology of China/a>;Hefei 230027/a>;China;4.Beijing University of Technology/a>;Beijing 100022/a>;China |
| Abstract: | Full-scale fire experiments were conducted in the Yingzuiyan Tunnel and the development of smoke layer were measured under different longitudinal wind speed conditions. Results showed that the different longitudinal wind speed and fire size would influence the smoke layer falls deeply. Comparing the two factors,longitudinal wind speed takes more important role. When fire source locates at high position,the expansibility of smoke layer is enlarged and adverse smoke flow happens outside of a certain distance ... |
| Keywords: | tunnel fire smoke layer height longitudinal wind speed |
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