安顺市中心城区地下综合管廊一期建设工程消防系统设计

Design of Fire Extinguishing System for Utility Tunnel in Central District of Anshun City

安顺市中心城区地下综合管廊一期工程总长度为8.5 km,管道舱容纳给水管DN500、通信管道16孔;电力舱容纳10 kV电缆16回、110 k V高压电缆2回;燃气舱容纳DN250燃气管;污水舱容纳DN400~DN500污水管。对综合管廊各舱室进行了火灾危险性分析,介绍了各舱室防火分区设置与疏散设计,讨论了综合管廊灭火设施的合理设置。在各舱室设置手提式灭火器,在电力舱设置超细干粉自动灭火系统。分析了自动灭火系统的参数选择、设计计算与系统布置,并介绍了自动灭火系统与火灾自动报警系统、通风系统的消防联动控制设计。工程通过合理配置灭火设施并进行系统联动设计,构建了安全高效的消防体系,为类似项目设计提供参考。

The total length of the utility tunnel(phaseⅠ)in central district of Anshun City was about 8.5 km.The pipeline cabin contained DN500 water supply pipeline and 16 holes in communication pipelines;the power cabin contained 16 cycles of 10 kV cable and 2 cycles of 110 kV high voltage cable;the gas cabin contained DN250 gas pipeline;the wastewater cabin contained DN400-DN500 pipeline.The fire risk analysis of each cabin of the utility tunnel was carried out.The fire prevention zoning and evacuation design of each cabin were introduced.The reasonable setting of fire extinguishing facilities of the utility tunnel was discussed.Hand-held fire extinguishers were installed in each cabin and ultra-fine dry powder automatic fire extinguishing system was installed in the power cabin.The parameters selection,design calculation and system layout of automatic fire extinguishing system were analyzed.The fire fighting linkage control design of automatic fire extinguishing system,automatic fire alarm system and ventilation system were also introduced.The project constructed a safe and efficient fire extinguishing system through rational allocation of fire extinguishing facilities and linkage system design,which could provide reference for similar projects design.