五老山隧道掌子面积热分析及降温技术研究  

Thermal Analysis and Cooling Technology for the Tunnel Heading of the Wulao Mountain Tunnel

作　　者：杨位珂 YANG Weike(China Railway 14th Bureau Group Construction Engineering Co.,Ltd.,Ji'nan 250000,China)

机构地区：[1]中铁十四局集团建筑工程有限公司,山东济南250000

出　　处：《国防交通工程与技术》2025年第1期50-56,共7页Traffic Engineering and Technology for National Defence

摘　　要：长距离独头施工形成的掌子面处易积热,影响施工人员的作业环境。以五老山隧道掌子面处温度为研究对象,探究隧道内热源的形成,利用数值模拟软件,分析特长隧道在正常通风和增设局部降温措施下的温度场分布。结果表明:掌子面处高温的主要来源为机械散热;机械送风可以在一定程度上抑制掌子面高温,但当独头施工长度超过一定距离后,通风已无法有效降低温度;采用局部降温措施,如采用片冰融化的冷水,并在隧道侧壁喷雾,可将温度控制在理想范围内。采用综合降温措施后施工温度控制良好。During long-distance single-head excavation,heat tends to accumulate at the tunnel heading,adversely affecting working conditions.Taking the tunnel heading temperature as the primary focus,this study investigates the formation of heat sources and employs numerical simulation software to analyze the temperature distribution in an extra-long tunnel under both standard ventilation and additional local cooling measures.The results indicate that mechanical heat dissipation is the dominant factor leading to high temperatures at the tunnel heading.While forced ventilation can partially mitigate elevated temperatures,once the single-heading excavation length exceeds a certain threshold,ventilation alone becomes insufficient for effective cooling.By contrast,localized cooling measures,such as using cold water derived from melted flake ice and mist-spraying along the tunnel sidewalls,can maintain the heading temperature within acceptable limits.Implementation of a comprehensive cooling scheme ultimately achieves satisfactory temperature control during tunnel construction.

关 键 词：掌子面 积热 热源 形成机制 数值模拟 局部降温 温度场 

分 类 号：U453.5[建筑科学—桥梁与隧道工程]