隧道侧向集中排烟系统排烟阀设置间距选择  

Selection of smoke exhaust valve spacing for lateral smoke exhaust system of tunnel

作　　者：于晓波 Yu Xiaobo(China Railway Fifth Survey and Design Institute Group Co.,Ltd.,Beijing 102600,China)

机构地区：[1]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《山西建筑》2022年第19期132-135,共4页Shanxi Architecture

基　　金：中国铁建股份有限公司科技研究开发计划项目(2019-B20);超长水下公路(市政)隧道通风排烟及防灾救援关键技术研究。

摘　　要：对于隧道内侧向集中排烟系统的方案比选中,选择合理的排烟阀间距,对于有效地控制隧道内的烟气蔓延及提高排烟效率起着至关重要的作用。通过采用FDS模拟软件对隧道内的火灾工况进行数值模拟分析,分别通过对50 m,60 m,70 m三种不同排烟阀设置间距时的火灾烟气蔓延规律以及烟气控制效果进行对比,确定当排烟阀的间距为50 m时,能够达到很好的烟气控制效果与排烟效率,且此时隧道内的温度、能见度指标均未达到临界危险值,有利于人员的安全疏散。For the scheme comparison and selection of the lateral smoke exhaust system from the inner side of the tunnel,the selection of reasonable smoke exhaust valve spacing plays a vital role in effectively controlling the smoke spread and improving the smoke exhaust efficiency.In this paper,FDS simulation software is used to simulate the fire conditions in the tunnel.By comparing the fire smoke propagation law and smoke control effect at different smoke exhaust valve spacing of 50 m,60 m and 70 m,it is determined that when the smoke exhaust valve spacing is 50 m,good smoke control effect and smoke exhaust efficiency can be achieved,and the temperature and visibility do not reach the critical hazard value,it is beneficial to the safe evacuation of personnel.

关 键 词：隧道火灾 侧向集中排烟 排烟阀间距 

分 类 号：TU967[建筑科学]