非对称V形隧道火灾重点排烟排烟效果的试验研究  

Experimental study on the smoke control effect of the point smoke exhaust system in asymmetric V-shaped tunnel

作　　者：郄宇洲 李俊梅[1,2] 刘文博 郭志成 Qie Yuzhou;Li Junmei;Liu Wenbo;Guo Zhicheng(Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing 100124,China;Beijing Key Laboratory of Green Built Environment and Energy Efficient Technology,Beijing University of Technology,Beijing 100124,China;CCCC Highway Consultants Co.Ltd.,Beijing 100088,China)

机构地区：[1]北京工业大学城市建设学部,北京100124 [2]北京工业大学绿色建筑环境与节能技术北京市重点实验室,北京100124 [3]中交公路规划设计院有限公司,北京100088

出　　处：《消防科学与技术》2025年第3期356-361,共6页Fire Science and Technology

基　　金：北京市自然科学基金资助项目(8222002)。

摘　　要：为研究非对称V形隧道重点排烟时的烟气控制效果,采用了比例模型试验的方法,以20 MW设计火灾为例,在研究一般隧道重点排烟合理排烟量的基础上,针对V形隧道,研究当火源位于变坡点时,不同坡度组合及不同排烟阀开启方式对烟气控制效果的影响。研究结果表明:针对20 MW的设计火灾,能将烟气进行有效控制的合理排烟量约为140 m^(3)/s。对于V形隧道,当火源两侧对称地开启3个排烟口,无法有效地控制大坡度侧的烟气扩散时,可以考虑适当增加大坡度侧的排烟阀开启数量;V形不对称隧道两侧坡度差太大,尤其大坡度侧坡度值过大时,对烟气实施有效控制较为困难。In order to study the smoke control effect of point smoke exhaust system in the asymmetric V-shaped tunnel,the scale model experiments were carried out.Taking the design fire of 20 MW as an example,based on the study of the reasonable smoke exhaust volume rate in normal tunnel,the influences of different slope combinations and different opening modes of smoke exhaust vent on the smoke control effect were studied for the V-shaped tunnel when the fire source was located at the slope changing point.The results show that smoke exhaust of 140 m^(3)/s can effectively control the smoke for the design fire of 20 MW.For the V-shaped tunnel,when 3 smoke vents are opened symmetrically on both sides of the fire source,the smoke diffusion on the side with a large slope cannot be effectively controlled.In this case,the number of smoke exhaust vents on the side with a large slope can be appropriately increased.When the slope difference between the two sides of V-shaped asymmetrical tunnel is too large,especially when the slope of the large slope side is too large,it is difficult to control the smoke effectively.

关 键 词：V形隧道 火灾 比例模型试验 重点排烟 烟气控制 

分 类 号：X913.4[环境科学与工程—安全科学] TU997[建筑科学—市政工程]