宝兰高铁渭河隧道水文和工程地质选线研究  

Research on Hydrogeology and Engineering Geology of Route Selection for Wei He Tunnel on Baoji-Lanzhou High-speed Railway

作　　者：张喆[1,2] ZHANG Zhe(China Railway First Survey and Design Institute Group Ltd.,Xi'an 710043,China;Shaanxi Railway and Underground Traffic Engineering Key Laboratory(FSDI),Xi'an 710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司 [2]陕西省铁道及地下交通工程重点实验室(中铁一院)

出　　处：《铁道标准设计》2020年第2期130-135,共6页Railway Standard Design

基　　金：中铁第一勘察设计院集团有限公司重大课题(院科12-05)

摘　　要：渭河隧道是宝鸡至兰州高铁重、难点控制性工程。区内地质构造运动较活跃,黄土滑坡、富水砂岩层及饱和卵砾石等不良地质发育,复杂的工程及水文地质条件严重制约着渭河隧道选线工作。通过野外地质调查、原位测试、室内试验、理论计算、地质分析等方法对影响隧道选线的地质问题进行了综合评价,提出竖向绕避滑坡群方案,通过分层抽水试验解决了复杂地层涌水量计算参数的问题,对合理确定隧道埋深和辅助坑道方案的选择具有指导意义。Weihe Tunnel is a control project of Baoji-Lanzhou high-speed railway. The geological tectonic movements in this area are relatively active. Bad geology, such as loess landslide, water-rich sandstone and saturated gravel, are well developed. Complex engineering and hydro-geological conditions severely restrict the route selection of the Wei He tunnel. By means of field geological investigation, in-situ test, laboratory test, theoretical calculation and geological analysis, a comprehensive evaluation of the geological problems affecting the tunnel route selection is conducted. Finally, a scheme for vertically avoiding landslide groups is proposed. The stratified pumping test has solved the problem of water inflow calculation parameters in complex strata, which has guiding significance for rationally determining tunnel depth and selecting auxiliary tunnel scheme.

关 键 词：地质选线 渗透系数 分层抽水 耤河宽谷区 宝兰高铁 

分 类 号：U212.22[交通运输工程—道路与铁道工程]