西安科技大学学报2025，Vol.45Issue(2)：317-327,11.DOI:10.13800/j.cnki.xakjdxxb.2025.0210
某"日"型UTLT主隧道送风风速对火灾烟气控制的影响
Influence of air supply speed on fire smoke control ina"日"shaped UTLT main tunnel
摘要
Abstract
In order to solve the ventilation and smoke exhaust design problems of Urban Traffic Link Tunnel(UTLT)in irregular cities and explore the optimal air supply speed suitable for different lateral ventilation conditions,the impact of main tunnels with air supply speeds of 1.54,3.54,5.54,7.54,9.54,and 11.54 m/s on smoke spread was studied based on the Pyrosim software.A simulation analy-sis was conducted using a"日"shaped tunnel in Xi'an as an example to study the ventilation effect under different working conditions.The results indicate that:When the main tunnel adopts semi-trans-verse ventilation,all the fire parameters in the downstream area of the fire source meet the requirements of smoke control indicators at each air supply speed.When the upstream area of the fire source is only 1.54 m/s,all the parameters meet the requirements.Therefore,the air supply speed should be set a-round 1.54 m/s,and the downstream area of the fire source should be emphasized in setting the evacu-ation path.In the case of full transverse ventilation,when the air supply speed is 5.54 m/s,the index value is better,and 5.54 m/s can be used as the best air supply speed.Since the fire parameters of the full transverse ventilation and smoke exhaust mode fluctuate greatly in the local area of the tunnel,it is difficult to control,and considering the amount of engineering and financial requirements,it is recommen-ded to adopt semi-transverse ventilation and smoke exhaust.The research of this paper can provide some theoretical reference for the organization and design of ventilation system of the"日"shaped UTLT.关键词
"日"型UTLT/火灾烟气/通风方式/送风速度/烟气蔓延规律/烟控措施Key words
"日"shaped UTLT/fire smoke/ventilation method/air supply speed/smoke spread pat-tern/smoke control measures分类
安全科学引用本文复制引用
李凯玲,林雪,魏刘阳,屈璐,姚田田,傅文静..某"日"型UTLT主隧道送风风速对火灾烟气控制的影响[J].西安科技大学学报,2025,45(2):317-327,11.基金项目
国家自然科学基金项目(52008030) （52008030）
