| 顶隔板对公路隧道火灾烟气蔓延及温度的影响研究 |
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| 引用本文： | 周湘川,赵望达,倪天晓. 顶隔板对公路隧道火灾烟气蔓延及温度的影响研究[J]. 铁道科学与工程学报, 2011, 8(1): 77-81 |
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| 作者姓名： | 周湘川 赵望达 倪天晓 |
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| 作者单位： | 中南大学土木建筑学院,湖南,长沙,410075 |
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| 基金项目： | 浙江省科技计划项目“重大科技专项”(2008C13041-2) |
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| 摘 要： | 以隧道独立排烟道集中排烟模式为研究背景,对不同坡度下有无顶隔板的12组火灾工况进行数值模拟,分析顶隔板对隧道火灾烟气蔓延与温度分布的影响.结果表明:顶隔板使隧道在火灾情况下产生明显烟囱效应的临界坡度变为1%,同时隧道顶部的最高温度比原来至少提高了10%,隧道内600℃以上的高温烟气分布范围比无顶隔板情况多出6 m以上、...
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| 关 键 词： | 顶隔板 隧道火灾 烟气蔓延 温度 |
The influence of roof spacer on the smoke spread and temperature in highway tunnel fire |
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| ZHOU Xiang-chuan , ZHAO Wang-da , NI Tian-xiao. The influence of roof spacer on the smoke spread and temperature in highway tunnel fire[J]. Journal of Railway Science and Engineering, 2011, 8(1): 77-81 |
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| Authors: | ZHOU Xiang-chuan ZHAO Wang-da NI Tian-xiao |
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| Affiliation: | ZHOU Xiang-chuan,ZHAO Wang-da,NI Tian-xiao(School of Civil and Architectural Engineering,Central South University,Changsha 410075,China) |
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| Abstract: | The research background is the centralized smoke extraction mode of the tunnel independence smoke extraction passage in this paper.Twelve groups of fire situation under different slopes in the tunnel with roof spacer or without roof spacer were simulated,and the influence of the roof spacer on the smoke spread and temperature distribution was analyzed.It is proved that the roof spacer can make the tunnel produce the evident chimney effect in fire and the critical slope gradient is 1%.At the same time,the hi... |
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| Keywords: | roof spacer tunnel fire smoke spread temperature |
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