火灾情况下某单洞双层盾构隧道人员疏散分析

发布时间：2018-06-14 11:39

本文选题：安全工程 + 双层隧道火灾　；参考：《安全与环境学报》2017年03期

【摘要】：对于火灾情况下单洞双层超大断面双层盾构隧道人员疏散问题,在现有的规范中,没有相关条文说明给出明确要求。主要针对火灾情况下某单洞双层盾构隧道人员疏散进行分析,对我国某水下盾构隧道开展了火灾情况下人员疏散的模拟研究。利用Pathfinder模拟疏散软件,通过模拟计算获得该双层盾构隧道发生一起火灾情况下人员逃生所需的时间,验证其疏散通道的疏散能力,以及疏散楼梯尺寸、疏散逃生洞口间距的有效性。在模拟中,将火源设置在隧道的下层,人员从隧道下层往上层疏散。结果表明,基于隧道内疏散楼梯最大的有效宽度,当疏散逃生洞口间距设置为36m时,方可将人员疏散至未失火层隧道的时间控制在6 min以内,从而满足"6 min原则"要求。
[Abstract]:In the existing code, there is no explicit requirement for the evacuation of single hole and double-deck shield tunnel under fire conditions. Based on the analysis of the evacuation of a single hole and double shield tunnel in fire, a simulation study on the evacuation of a underwater shield tunnel in China was carried out in this paper. By using Pathfinder to simulate evacuation software, the time needed for people to escape in a fire in the double-shield tunnel is obtained by simulation calculation, and the evacuation ability of evacuation passage and the size of evacuation staircase are verified. Effectiveness of evacuation hole spacing. In the simulation, the fire source is set at the lower layer of the tunnel, and the personnel are evacuated from the lower layer of the tunnel to the upper layer. The results show that based on the maximum effective width of the evacuation staircase in the tunnel, when the distance between the evacuation holes is set at 36m, the time of evacuation to the tunnel without fire layer can be controlled within 6 min, thus meeting the requirement of "6 min principle".
【作者单位】：中交第二公路勘察设计研究院有限公司;中国科学技术大学火灾科学国家重点实验室;
【基金】：安徽省自然科学基金项目(1508085QE84) 中交建设股份特大科技项目(2010-ZJKJ-01)
【分类号】：U455.43;U458

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