大断面客运专线隧道穿越第三系富水复合地层设计关键技术研究  

Study of Key Technologies in Design of Large Cross-section Tunnel through Rich Water Tertiary Complex Strata on Passenger Dedicated Line

作　　者：伊兴芳[1] 

机构地区：[1]铁道第三勘察设计院集团有限公司,天津300142

出　　处：《铁道标准设计》2015年第2期73-76,共4页Railway Standard Design

摘　　要：大西客运专线干庆隧道通过我国中西部地区广泛分布的第四系、第三系等新生代地层,此套地层以粉质黏土、砂层、黄土为主,地层分布随机,且砂层富含上层滞水性质囊状水,在施工过程中多次涌砂涌水。针对大断面客运专线隧道穿越第三系富水复合地层施工技术难题,研究提出隧道掌子面稳定措施和超前预加固措施,有效解决涌砂涌水问题,确保施工安全。GanQing tunnel on Datong-Xi＇an passenger dedicated line passes through the Quaternary and Tertiary strata of the Midwest regions in China, characterized by silty clay, sand, loess in random distribution with cystic water in sand layer. Sand and water gush occurred many times during the construction. In order to settle the problem, this paper puts forward tunnel face stability measures and advance pre-strengthening to effectively solve the problem and ensure construction safety.

关 键 词：客运专线铁路 铁路隧道 复合地层 超前预加固 

分 类 号：U238[交通运输工程—道路与铁道工程] U452.2[建筑科学—桥梁与隧道工程]