山岭隧道衬砌外水压力公式解析研究  

Analysis of the Formula of External Water Pressure of Mountain Tunnel Lining

作　　者：张洪伟[1,2] 汤文昊 费连跃 周添红 未碧贵[1] 李华[1,2] ZHANG Hong-wei;TANG Wen-hao;FEI Lian-yue;ZHOU Tian-hong;WEI Bi-gui;LI Hua(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Gansu Key Laboratory of Yellow River Water Environment,Lanzhou 730070,China)

机构地区：[1]兰州交通大学环境与市政工程学院,兰州730070 [2]甘肃省黄河水环境重点实验室,兰州730070

出　　处：《科学技术与工程》2023年第8期3502-3510,共9页Science Technology and Engineering

基　　金：甘肃省科技计划资助项目(20JR2RA002)。

摘　　要：隧道衬砌外水压力问题,一直是困扰隧道施工安全的技术难题,因此衬砌外水压力公式的精确推导及其参数的影响成为各国学者研究的热点。以甘肃木寨岭隧道为工程实例,考虑地下水渗流流速对于衬砌外水压力的影响,运用线性渗流定律及地下水动力学理论,推导出隧道衬砌外水压力及隧道毛洞涌水量的理论计算公式,并与其他经典、经验公式进行了对比验证分析。通过对推导公式的解析,得出了影响隧道衬砌外水压力大小的各因素主次关系,依次是:衬砌渗透系数>注浆圈渗透系数>注浆圈厚度>渗流流速。研究成果可对隧道设计施工和安全管理提供理论指导。The external water pressure of tunnel lining has always been a technical problem puzzling the safety of tunnel construction.Therefore,the accurate derivation of the external water pressure formula of the lining and the influence of its parameters have become a hot research topic for scholars all over the world.Taking Muzhailing Tunnel in Gansu Province as an example,considering the influence of groundwater seepage velocity on the external water pressure of the lining,the theoretical calculation formulas for the external water pressure of the tunnel lining and the water inflow of the tunnel were derived by using the linear seepage law and groundwater dynamics theory,and were compared with other classical and empirical formulas for verification and analysis.Through the analysis of the derived formula,the primary and secondary relationships of the factors affecting the external water pressure of the tunnel lining were obtained.The order is lining permeability coefficient>grouting ring permeability coefficient>grouting ring thickness>seepage velocity.The research results can provide theoretical guidance for tunnel design,construction and safety management.

关 键 词：隧道衬砌 渗流流速 水压力公式 影响因素 显著性分析 

分 类 号：U458.1[建筑科学—桥梁与隧道工程]