摘要
为了明确城市大型地下互通立交水消防系统的设计原则与关键参数,提升灭火效率与系统协同能力,本文以某“T”型地下互通立交为案例,系统分析其结构特征与火灾风险,结合规范与典型案例,重点探讨消火栓与泡沫-水喷雾联用灭火系统在分汇流段、管养分界点等特殊部位的布置方式、设计流量与联动策略。研究表明:提出消火栓布置间距为40 m,3车道以上区域采用双侧布置;泡沫-水喷雾系统灭火强度为6.5 L/(min·m^(2)),主线汇流段启动2个灭火分区,标准段及匝道启动3个分区;分汇流点火灾启动相邻3个分区,管养分界点火灾启动两侧各2个分区,实现信息共享与协同灭火。研究结果可为类似工程水消防系统设计提供参考。
To enhance the understanding of design principles and key parameters of water-based fire protection systems in large-scale urban underground interchanges,and to improve both firefighting efficiency and system coordination,this paper presents a detailed case study of a“T”-shaped underground interchange.By analyzing its structural characteristics and fire risks,and by referencing relevant standards and real-world examples,the study investigates the layout,design discharge,and linkage control strategies of fire hydrants and foam-water spray systems in critical zones,including diversion and convergence sections,as well as maintenance boundary points.The findings indicate that fire hydrants should be installed at intervals of 40 meters,with double-sided installation advised for roadways containing more than three lanes.The foam-water spray system should operate at a fire suppression intensity of 6.5 L/(min·m^(2)),with two zones activated in the mainline merging area and three in standard sections and ramps.In the event of a fire occurring in a diversion or convergence section,three adjacent zones are triggered,while fires at maintenance boundary points activate two zones on each side,thereby facilitating effective information sharing and coordinated firefighting operations.The findings of this research can serve as a reference for designing water-based fire protection systems in similar projects.
作者
秦文龙
赵小龙
QIN Wenlong;ZHAO Xiaolong(Hefei Institute for Public Safety Research,Tsinghua University,Hefei Anhui 230601,China;Operation and Monitoring Center for Hefei Urban Safety&Security,Hefei Anhui 230601,China)
出处
《安全》
2025年第8期21-26,共6页
Safety & Security
基金
国家重点研发计划课题(2023YFC3807602)。
关键词
城市大型地下互通立交
水消防系统
泡沫-水喷雾联用灭火系统
分汇流段
large-scale urban underground interchange
water-based fire protection system
foam-water spray system
diversion and convergence sections
