大断面浅埋高速铁路隧道施工关键技术研究  

Research on Key Technologies for Construction of Large Section Shallow Buried High Speed Railway Tunnels

作　　者：李泽钿 LI Ze-dian(Xiamen Engineering Co.Ltd.ofChina First Highway Engineering Co.Ltd.,Xiamen 361000,China)

机构地区：[1]中交一公局厦门工程有限公司,福建厦门361000

出　　处：《工程建设与设计》2024年第6期106-108,共3页Construction & Design for Engineering

摘　　要：为了提升高速铁路隧道施工技术,总结了大断面浅埋隧道的判定方法,并以某铁路隧道为研究对象,利用MIDAS软件建立计算模型,对比了台阶法、留核心土法、CD法、双侧壁法的加固效果,并从隧道进洞、超前支护、塌方处治等方面探讨了大断面浅埋隧道的施工要点。同时,以双侧壁导坑法为例,计算了不同开挖高度和开挖面距离下隧道围岩的变形。In order to improve the construction technology of high-speed railway tunnels,the judgment methods of large section shallow buried tunnels were summarized.A calculation model was established by using MIDAS software for a certain railway tunnel,and the reinforcement effects of step method,circular excavation with core soil method,CD method,and double-sided wall method were compared.The construction points of large section shallow buried tunnels were discussed from the aspects of tunnel entry,advance support,and landslide treatment.At the same time,taking the double-sided heading method as an example,the deformation of tunnel surrounding rock under different excavation heights and excavation surface distances was calculated.

关 键 词：大断面 浅埋隧道 施工要点 塌方处治 施工参数 

分 类 号：U455[建筑科学—桥梁与隧道工程]