摘要
GB 50838-2015《城市综合管廊工程技术规范》中规定,综合管廊中容纳电力电缆的舱室应设置自动灭火系统,但未明确要求采用何种自动灭火系统及具体设置参数,对灭火系统选取的研究也大多停留在理论对比分析层面。通过综合管廊实体火灾试验对比,分析了干粉灭火系统和细水雾灭火系统在管廊内的适用性,认为对于地下综合管廊电力舱,细水雾灭火系统的综合灭火效果好、性价比高、具有良好的电气绝缘性,相比于超细干粉灭火系统有明显优势。
GB 50838-2015 Technical code for urban utility tunnel engineering stipulates that the cabin containing power cables in the urban utility should be equipped with automatic fire extinguishing system, but the requirements are not clear for the kind of automatic fire extinguishing system and specific parameters, and the research on the selection of fire extinguishing system mostly remains at the level of theoretical comparative analysis. Based on the comparison of the fire tests of the utility tunnel, the applicability of the dry powder fire extinguishing system and the water mist fire extinguishing system is analyzed. It is considered that the water mist fire extinguishing system has good comprehensive fire extinguishing effect, high cost performance and good electrical insulation for the cabin of the utility tunnel, and has obvious advantages over the ultra-fine dry powder fire extinguishing system.
引文
[1]董立.市政综合管廊关键技术研究[J].科技创新导报,2012,(7):17-18.
[2]孙伟俊.城市地下综合管廊火灾危险控制技术研究[D].西安:西安建筑科技大学,2017.
[3]孙磊,刘澄波.综合管廊的消防灭火系统比较与分析[J].地下空间与工程学报,2009,5(3):616-620.118
[4]张云,王华,陈艳平.地下综合管廊消防设计的再探讨[J].给水排水,2017,53(8):117-119.
[5]王恒栋.城市市政综合管廊安全保障措施[J].城市道桥与防洪,2014,(2):157-159.
[6]GB 50838-2015,城市综合管廊工程技术规范[S].
[7]DB35T 1153-2011,超细干粉自动灭火装置设计、施工及验收规范[S].
[8]陶海军,朱国庆,赵永昌,等.综合管廊电缆燃烧烟气温度实验研究[J].消防科学与技术,2017,36(6):745-748.
[9]张爱华.城市综合管廊工程的消防设计[J].消防科学与技术,2017,36(1):51-53.
[10]赵永昌,朱国庆,高云骥.城市地下综合管廊火灾烟气温度场研究[J].消防科学与技术,2017,36(1):37-40.