| 集中排烟公路隧道排烟阀下方烟气层吸穿现象研究 |
| |
| 引用本文： | 刘洪义,倪天晓,张新.集中排烟公路隧道排烟阀下方烟气层吸穿现象研究[J].铁道科学与工程学报,2012(3):77-82. |
| |
| 作者姓名： | 刘洪义 倪天晓 张新 |
| |
| 作者单位： | 湖南省公安消防总队;长沙科锐消防工程技术有限公司 |
| |
| 摘 要： | 以水平公路隧道为研究对象,分析30 MW火灾下的排烟速率理论计算方法及排烟阀下方发生吸穿现象时的烟气层厚度临界值。通过数值模拟,获得不同排烟速率下排烟阀下方的温度、流速、烟气层厚度,验证了排烟阀下方烟气层吸穿现象的存在,为集中排烟模式的优化提供参考。
|
| 关 键 词： | 公路隧道火灾 集中排烟 排烟速率 烟气层吸穿 |
Study on smoke layering plugholing under the exhaust damper of central smoke extraction model during highway tunnel fire |
| |
| LIU Hong-yi,NI Tian-xiao,ZHANG Xin.Study on smoke layering plugholing under the exhaust damper of central smoke extraction model during highway tunnel fire[J].Journal of Railway Science and Engineering,2012(3):77-82. |
| |
| Authors: | LIU Hong-yi NI Tian-xiao ZHANG Xin |
| |
| Institution: | 1.Hunan General Fire Brigade,Changsha 410205,China; 2.Changsha Kerich Fire Protection Engineering Tech.Co.Ltd,Changsha 410004,China) |
| |
| Abstract: | The theoretical calculation method of exhaust velocity and the critical thickness of smoke layering under exhaust damper when plugholing occur in a horizontal highway tunnel under 30 MW fire were analyzed.The temperature,velocity and the smoke layering thickness under exhaust damper were obtained by numerical simulation.The phenomenon of smoke layering plugholing under exhaust damper with different exhaust velocities was confirmed,which would offer reference for the optimization of central smoke extraction model. |
| |
| Keywords: | highway tunnel fire central smoke extraction exhaust velocity smoke layering plugholing |
| 本文献已被 CNKI 等数据库收录！ |
