兰新高铁祁连山越岭段工程地质选线研究及回顾  

Research and Review on Engineering Geological Route Selection for Qilian Mountain Ridge Section on Lanzhou-Urumqi High-speed Railway

作　　者：王进华 WANG Jinhua(Shaanxi Railway and Underground Traffic Engineering Key Laboratory(FSDI),Shaanxi Xi'an 710043,China)

机构地区：[1]陕西省铁道及地下交通工程重点实验室(中铁一院),西安710043

出　　处：《铁道标准设计》2021年第6期6-11,共6页Railway Standard Design

摘　　要：祁连山越岭段是兰新高铁地质条件最复杂、选线最困难、重难点控制性工程最集中、投资最大的区段。该段地质构造极其复杂,做好地质选线工作十分重要。地质选线过程贯穿于勘察的各个阶段,在系统分析区域地质资料、了解访问临近工程施工情况的基础上,结合越岭段特殊复杂的地质和自然条件,通过采用针对性强的综合勘察方法和手段,分析研究控制线路方案的主要地质因素,提出越岭段选线原则,从地质构造、隧道洞口条件和不良地质、隧道围岩条件三个方面对工程的影响角度进行分析,对初测和定测方案进行研究比较,得出了定测方案地质条件相对较好、技术可行、经济合理的结论。同时通过施工揭示和安全运营,也印证了线路方案的科学性、合理性、可靠性和经济性。The Ridge section in Qilian Mountains is characteristic of the most complicated geological conditions and also the most difficult in route selection of the Lanzhou-Urumqi High-speed Railway.In addition,the most difficult control projects of the railway are concentrated in the section with the biggest investment.Because of the extremely complex geological structures,an effective geological route selection is crucial.We collected and analyzed regional geological data firstly,and then investigated and visited adjacent projects to understand the construction situation of the Ridge section.On the basis of targeted comprehensive survey of geological structure,tunnel portal conditions,unfavorable geologies and surrounding rock mass,we analyzed and studied the main-controlling geological factors of the project.After continuous optimization and comprehensive comparison,a technically feasible and economically reasonable route scheme with relatively good geological conditions is recommended.The selected route is attested to be a scientific,rational,reliable and economic line by later construction and safe operation.

关 键 词：兰新高铁 祁连山 越岭隧道 地质选线 工程地质问题 线路方案 

分 类 号：U212.22[交通运输工程—道路与铁道工程] U212.35