新型排烟模式下地铁气流组织模拟研究  

Numerical Simulation for the Airflow Organization in the Metro Station under the Novel Smoke Extraction Mode

作　　者：崔奇杰 郑文科[2] 何峰 蔡伟华[2] 姜益强[2] CUI Qi-jie;ZHENG Wen-ke;HE Feng;CAI Wei-hua;JIANG Yi-qiang(China Railway Design Corporation,Guangdong Branch,Shenzhen 518000, China;Harbin Institute of Technology, Harbin 150090, China)

机构地区：[1]中国铁路设计集团有限公司广东分公司,广东深圳518000 [2]哈尔滨工业大学,黑龙江哈尔滨150090

出　　处：《节能技术》2020年第2期109-112,126,共5页Energy Conservation Technology

摘　　要：地铁车站的排烟系统对于站内人员安全有重要意义。《地铁设计防火标准》GB51298-2018要求车站站台采用新的排烟模式。基于以上要求,本文重新设计了地铁车站站台公共区的排烟系统,并对该地铁站进行整体气流组织仿真研究。针对站台公共区发生火灾情况,分别研究了仅利用公共区排烟风机排烟与综合利用排烟风机和隧道排热风机共同排烟两种模式下地铁车站内的气流分布情况。设计了三种排烟风口布置模式,研究其在火灾时对于地铁站气流组织的影响,研究结果表明,方案B具有良好的适用性。此研究可为地铁车站在《地铁设计防火标准》下的排烟系统设计提供参考。The smoke extraction system has great significance on human safety in the metro station.The implementation of Standard for fire protection design of metro GB51298-2018 requires the new smoke extraction mode for theplatform public area ofmetro station.Therefore,the smoke extraction system in the platform public area of the metro stationhas been redesigned in this paper,and the air flow organization simulation of the metro station has been carried out.In the fire conditions of the platform public area,the air flow distribution in the metro station of opening the smoke exhaust fan and simultaneously opening the smoke exhaust and tunnel exhaust fanand was studied separately.Three smoke exhaust layout modes were designed to study the influence of airflow organization of the metro station.The results show that scheme B has good applicability.This investigation can provide reference for the ventilation design under Standard for fire protection design of metro.

关 键 词：地铁车站 气流组织 数值模拟 排烟系统 

分 类 号：X932[环境科学与工程—安全科学]