城市隧道组合通风排烟效果模拟研究  

Simulation study on smoke control of urban tunnels with combined smoke exhaust system

作　　者：朱华[1] 袁建平[2] 

机构地区：[1]湖北省消防总队,湖北武汉430070 [2]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《消防科学与技术》2014年第3期264-266,共3页Fire Science and Technology

基　　金：国家自然科学基金(51204123);武汉市建设科研项目(201105)

摘　　要：利用FDS数值模拟对某3 300m城市隧道组合通风排烟方式的火灾烟气控制效果进行了研究。根据不同烟气控制方案下2m高处的温度和能见度结果的分析可知,对于采用组合通风排烟方式的城市隧道,当发生20MW的火灾时,应控制纵向风速在2.5m/s左右并且只开启火源下游的排烟口,可以较好地保证火源上下游人员的安全。Numerical simulations using FDS were carried out to study the smoke control of a 3 300 m length urban tunnels with combined smoke exhaust system.Based on the analysis of the temperature and visibility at 2 m height under different smoke control strategies,it is concluded that when a fire with a HRR of 20 MW breaks out in a urban tunnel with combined smoke exhaust system,it is better to control the longitudinal velocity to be 2.5 m/s,and only open the smoke dampers downstream the fire to ensure the safety of people.

关 键 词：城市隧道 火灾 组合排烟 烟气控制 数值模拟 

分 类 号：X913.4[环境科学与工程—安全科学] TU962[建筑科学]