基于Pathfinder的地铁盾构隧道疏散平台优化研究
Optimization of Metro Shield Tunnel Evacuation Platform Based on Pathfinder
杨朋 1周勇 1赵品祥 1朱宏海 1王呼佳 1王宝峰1
作者信息
- 1. 中铁二院工程集团有限责任公司,四川 成都 610031
- 折叠
摘要
为探究地铁盾构隧道疏散平台应对火灾、水灾以及列车区间故障等不同场景人员疏散的合理方案,以疏散地铁6 辆B型车定员 1 460 人为目标,建立Pathfinder疏散仿真模型开展研究.先对 4 种不同疏散平台布置方案的最快疏散时间、疏散完成时间和车厢内人员撤离规律进行研究;再以最优的"四向通行"方案为例,对 7 种疏散平台宽度的最快疏散时间、疏散完成时间和车厢内人员撤离规律进行研究.研究结果表明:1)车厢内人员撤离分为快速撤离、缓慢撤离和人员清空 3 个不同特征阶段.从车厢撤离乘客是脱困最重要的环节,时间占整个疏散时间的比例大,需做好乘客撤离车厢的组织引导工作.2)在联络通道处采用"四向通行"结构,可实现疏散平台与道床连通且不中断疏散平台的最优方案.该方案可实现利用道床面在烟气底层疏散以应对火灾工况、疏散平台纵向连通并在高处疏散以应对水灾工况的双重功能.3)疏散平台宽度增加会大幅缩短乘客撤离车厢的时间,对最快疏散的时间影响小,宽度未加宽到 1 100 mm时对疏散时间无显著影响.4)需做好在联络通道、道床、人防门、防淹门、道岔区疏散平台的顺畅性设计.
Abstract
To explore reasonable schemes for the evacuation platform of metro shield tunnels in scenarios such as fire,flood,and train section failure,a Pathfinder evacuation simulation model is established to evacuate 1 460 people from 6 B-type metro cars.First,the shortest evacuation time,evacuation completion time,and evacuation rules of personnel in the carriage are examined across four evacuation platform layout schemes.Subsequently,using the optimal"four-way passage"scheme as an example,the shortest evacuation time,evacuation completion time,and evacuation rules of personnel in the carriage across seven evacuation platform widths are studied.The results demonstrate the following:(1)Evacuation of carriage passengers occurs in three stages:rapid evacuation,slow evacuation,and personnel emptying.Evacuating passengers from the carriage is the most critical step in escaping danger and constitutes a large proportion of the entire evacuation time,necessitating the organization and guidance of passengers.(2)The"four-way passage"structure adopted at the connection gallery can optimize communication between the evacuation platform and the track bed without interrupting the evacuation platform.Its double-layer functionality achieves evacuation through the lower track bed during fires and via the longitudinally connected upper evacuation platform during floods.(3)Increasing the width of the evacuation platform significantly reduces passenger evacuation time with minimal impact on evacuation completion time.The width of the evacuation platform below 1 100 mm has minimal impact on evacuation time.(4)Smooth design of the evacuation platform in connection galleries,track beds,civil air defense doors,flood prevention doors,and turnout areas is essential.
关键词
Pathfinder/地铁盾构隧道/疏散平台/疏散平台方案/疏散平台宽度Key words
Pathfinder/metro shield tunnel/evacuation platform/evacuation platform scheme/evacuation platform width引用本文复制引用
出版年
2024
NETL
NSTL
万方数据