ZHANG Jian-bing,HAN Yi.Construction and Discussion of an Urban Utility Tunnel Fire Protection System in Changsha[J].China Water & Wastewater,2021,37(14):89-92.
长沙某综合管廊工程消防系统构建与探讨
- Title:
- Construction and Discussion of an Urban Utility Tunnel Fire Protection System in Changsha
- Keywords:
- utility tunnel; fire protection system; automatic fire extinguishing system; portable fire extinguisher
- 摘要:
- 经技术、经济比选五种常用的自动灭火系统后，长沙某综合管廊工程消防系统确定采用超细干粉自动灭火系统。采用体积法进行灭火设计计算，灭火浓度为0.15 kg/m3，每具装置的充装量为5 kg，电力舱和综合舱灭火装置布置间距分别为3.3 m和3.2 m。经检验，电力舱和综合舱自动灭火系统开口面积分别占总内表面积的1.56%和1.59%，均小于5%，满足全淹没灭火方式的条件。
- Abstract:
- After technical and economic comparison of five kinds of common automatic fire extinguishing systems, ultrafine dry powder automatic fire extinguishing system was adopted in the fire protection system design of an urban utility tunnel project in Changsha. The fire extinguishing design was calculated by volumetric method, and the fire extinguishing concentration, filling capacity of each device and spacing of fire extinguishing devices in power cabin and integrated cabin were determined, which were 0.15 kg/m3, 5 kg, 3.3 m and 3.2 m, respectively. After inspection, percentages of the open area in total internal surface area of the automatic fire protection system in the power cabin and integrated cabin were 1.56% and 1.59%, respectively, both less than 5%, which met the conditions of the total submergence fire extinguishing mode.
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