水下盾构隧道横通道设置对疏散救援影响研究

Study on the influence of large diameter shield underwater extra-long tunnel on evacuation rescue

以某大直径盾构水下特长隧道为研究对象,运用人员疏散模拟软件Pathfinder建立人员疏散数值仿真模型,分析研究了隧道疏散横通道设置间距、宽度及防护门宽度之间不同组合工况对人员疏散救援的影响。研究结论表明:疏散横通道间距、宽度以及防护门宽度三者对人员安全疏散具有综合影响,本隧道人员疏散必需安全疏散时间可取为300 s。研究结论可为盾构水下特长隧道安全疏散救援设计提供理论依据。

A large-diameter shield tunnel was used as the research object,and a numerical simulation model of personnel evacuation was established by using Pathfinder software to analyze the effect of different combinations of spacing,width and width of protective doors on personnel evacuation and rescue. The conclusions of the study showed that the spacing,width and door width of the evacuation cross passage had a comprehensive effect on the safe evacuation of personnel,and the necessary safe evacuation time for the evacuation of personnel in this tunnel could be300 s. The findings of the study could provide a theoretical basis for the safe evacuation and rescue design of the shield underwater long tunnel.