喷淋系统对上盖列车检修库火灾排烟的影响研究  

Study on the Influence of Spray System on Fire Smoke Exhaust of Upper Cover Train Maintenance Depot

作　　者：陈丽珠 董海广 胡睿 许淑惠 CHEN Lizhu;DONG Haiguang;HU Rui;XU Shuhui(School of Environment and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044;China Railway Fifth Exploration and Design Institute Group Co.Ltd.,Beijing 102600)

机构地区：[1]北京建筑大学环境与能源工程学院,北京100044 [2]中铁第五探勘设计院集团有限公司,北京102600

出　　处：《北京建筑大学学报》2023年第4期84-90,共7页Journal of Beijing University of Civil Engineering and Architecture

基　　金：住房和城乡建设部研究开发项目(Z18093);中铁第五探勘设计院集团有限公司科研项目(T5Y2019-C14)。

摘　　要：为研究地下检修库内发生火灾时,有无喷淋系统对火灾排烟量及烟气扩散情况的影响。采用FDS软件建立1:1的数值仿真模型进行模拟。通过分析不同火源位置的烟气层高度,烟气扩散速度以及能见度来观察火灾情况。结果表明:3处火源点在烟气层沉降的时间上,有喷淋比无喷淋依次迟了150 s、27 s、73 s。在沉降高度上,有喷淋比无喷淋依次增高了0.25 m、0.30 m、0.26 m。在最低扩散速度上,有喷淋系统比无喷淋系统降低了0.09 m/s。在模拟的600 s内,在2 m高度处无喷淋系统的出现能见度低于人员疏散耐受极限10 m,而有喷淋系统在600 s内还没出现这样的情况。因此对于此类地下列车检修库这种宽敞高大建筑应该安装喷淋装置。In order to study the influence of whether there is a sprinkler system on the smoke discharge and smoke diffusion during a fire in the underground maintenance depot,the 1∶1 numerical simulation model is established by FDS software for simulation.The fire situation is observed by analyzing the height of smoke layer,smoke diffusion speed and visibility at different fire sources.The results show that the settling time of the three fire sources in the smoke layer is 150 s,27 s and 73 s later with spraying than without spraying.In terms of settlement height,the the height with spraying is 0.25 m,0.3 m and 0.26 m higher than that without spraying.At the lowest diffusion speed,the speed with spraying system is 0.09 m/s lower than that without spraying system.In the simulated 600 s,the visibility without sprinkler system at a height of 2 m is lower than the tolerance limit of evacuation by 10 m,while the visibility of sprinkler system has not appeared within 600 s.Therefore,spraying devices should be installed for such spacious and tall buildings as the following inspection warehouses.

关 键 词：地下空间 自动喷水灭火系统 烟气蔓延 FDS模拟 

分 类 号：U298.4[交通运输工程—交通运输规划与管理]