城市综合管廊局部应用超细干粉灭火装置的实体火灾试验研究

Full scale tests on the local application of super fine powder fire extinguishing device in urban utility tunnel

针对超细干粉灭火装置在城市综合管廊的应用过程中缺乏设计依据的问题,分别针对贮压式和非贮压式超细干粉灭火装置开展了实体火灾模拟试验,提出了局部应用超细干粉灭火装置保护宽度、灭火设计强度的试验方法。通过试验研究获得了灭火装置的最小灭火设计强度,提出了城市综合管廊局部应用超细干粉灭火装置的工程用量设计方法,可用于指导管廊工程中超细干粉灭火装置的精细化设计。

In view of the lack of design guidelines for the application of super-fine powder fire extinguishing device in urban utility tunnel,full scale fire tests were carried out for the pressurestorage and non-pressure-storage super-fine powder fire extinguishing devices respectively.The test method of protection width and designed fire extinguishing intensity of local application of super-fine dry powder fire extinguishing device was proposed.The minimum fire extinguishing design strength of the fire extinguishing device was obtained through experimental research.The engineering dosage design method of local application of super-fine powder fire extinguishing device in urban utility tunnel was developed,which can be used to guide the design of super-fine powder fire extinguishing device in utility tunnel projects.