摘要
地下狭长空间发生火灾,高温烟气不能及时排除,人员不易疏散,危害极大,合理设计补风系统能有效提高机械排烟效率,抑制火灾危害。以某地下工程为例,通过数值模拟研究了机械补风量对狭长走廊机械排烟效果的影响,结果表明,地下狭长空间的补风量不宜过大,对于所选模型最佳补风量应为排烟量的50%到60%之间。针对该结果,进而提出了地下狭长空间补风系统的优化设计方案。
When fire occurs in underground long and narrow sapce,high temperature flue gas can not be exhausted,and personnel evacuation is not easy,which will cause great harm.The reasonable design of the ventilation system in underground long space can effectively improve the efficiency of mechanical smoke exhaustion.Taking an underground project as an example,the influence of mechanical ventilation volume on mechanical smoke exhaust in narrow corridor is studied by numerical simulation.The results show that the air supplement volume of the underground long space should not be too large,the best air supplement volume should be between 50%and 60%of the smoke exhaust volume for the selected model.According to the results,the optimal scheme of underground ventilation system in long and narrow space is put forward.
作者
向健宇
茅靳丰
毛维
余南田
邓忠凯
XIANG Jianyu;MAO Jinfeng;MAO Wei;YU Nantian;DENG Zhongkai(College of Defense Engineering,The Army Engineering University of PLA,Nanjing 210007,China;Research Institute for National Defense Engineering of Academy of Military Sciences PLA China,Beijing 100850,China;Unit 75714 PLA,Hengyang 421900,China))
出处
《防护工程》
2018年第2期35-40,共6页
Protective Engineering
关键词
补风
机械排烟
狭长空间
数值模拟
air supply
mechanical smoke exhaustion
long and narrow space
numerical simulation
