隧道火灾自然排烟简化分析及数值模拟  

Simplified theoretical analysis and numerical simulation of natural smoke exhaust in tunnels

作　　者：游宇航 阳东[2] 黄鑫[3] YOU Yu-hang;YANG Dong;HUANG Xin(Chongqing Hechuan Fire Detachment,Chongqing 401520,China;Faculty of Urban Construction and Environmental Engineering,Chongqing University,Chongqing 400045,China;Tianjin Fire Research Institute of MPS,Tianjin 300381,China)

机构地区：[1]重庆市合川区消防支队,重庆401520 [2]重庆大学城市建设与环境工程学院,重庆400045 [3]公安部天津消防研究所,天津300381

出　　处：《消防科学与技术》2018年第4期462-464,共3页Fire Science and Technology

基　　金：国家"十三五"重点研发计划项目"高效复合防排烟技术和关键装置"(2016YFC0800603)及子项目"城市交通隧道防排烟关键技术研究"(2016YFC080060304);公安部天津消防研究所基科费项目"自然排烟窗有效排烟面积确定方法研究"(2017SJ-A-38)

摘　　要：通过理论推导的方式得出隧道内火灾时自然排烟的简化计算模型,以及自然排烟与射流风机组合模式应满足的临界关系。通过FDS数值模拟分析,验证了隧道内发生火灾时采用自然排烟模式进行排烟的有效性、自然排烟与射流风机组合模式的可行性,提出了人员安全疏散和火灾扑救的对策。研究为隧道内排烟系统的设计提供了有力的理论支撑和技术参考。By theoretical derivation,the simplified theoretical model of natural smoke venting in tunnel fires was proposed, as well as the critical condition for the combination of natural smoke exhaust and jet fans. The FDS simulations demonstrate the effectiveness of pure natural smoke exhaust and the combination of the natural smoke exhaust and jet fans. The emergency evacuation and firefighting strategies were discussed. The paper provides theoretical guidance and technical reference for the design of smoke control system in tunnels.

关 键 词：隧道火灾 自然排烟 射流风机 数值模拟 

分 类 号：X913.4[环境科学与工程—安全科学] U453.5[建筑科学—桥梁与隧道工程]