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 14):89-92.
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Construction and Discussion of an Urban Utility Tunnel Fire Protection System in Changsha

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 14 14 Page: 89-92 Column: Date of publication: 2021-07-17
Author(s):
ZHANG Jian-bing1; 2; HAN Yi3
(1. School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China; 2. Tianjin Municipal Engineering Design & Research Institute Co. Ltd., Tianjin 300051， China；3. School of Environment and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China)
Keywords:
utility tunnel; fire protection system; automatic fire extinguishing system; portable fire extinguisher
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.
Last Update: 2021-07-19