滇藏铁路丽香段玉龙雪山隧道大变形特征及原因分析  

Characteristics and Causes of Large Deformation of Yulong Xueshan Tunnel in Lixiang Section of Yunnan-Tibet Railway

作　　者：王雪冰 WANG Xue-bing(China Railway Kunming Bureau Group Co.Ltd.Yunnan Railway Construction Headquarters,Dali 671000,China)

机构地区：[1]中国铁路昆明局集团有限公司滇西铁路建设指挥部,云南大理671000

出　　处：《工程建设与设计》2024年第6期44-49,共6页Construction & Design for Engineering

摘　　要：玉龙雪山隧道最大埋深1240m,为本项目最大埋深隧道,施工过程中出现了严重的隧道大变形问题。为揭示玉龙雪山隧道变质玄武岩地层大变形特征及其原因,论文依托丽香铁路玉龙雪山隧道,通过现场调研、理论分析和现场监测等方法研究了大变形段的变形、破坏及松动圈特征,分析了隧道发生大变形的原因。The maximum buried depth of Yulong Xueshan Tunnel is 1240 m,which is the largest buried depth of the tunnel in this project.Serious tunnel deformation occurred in the construction process.In order to reveal the characteristics and causes of large deformation of metamorphic basalt strata in Yulong Xueshan Tunnel,this paper studies the characteristics of deformation,failure and loose circle of large deformation section through field investigation,theoretical analysis and field monitoring,and analyzes the causes of large deformation in the tunnel.It can be used as a reference for the construction of large compressive deformation tunnels in Sichuan-Tibet Railway and Yunnan-Tibet Railway.

关 键 词：铁路隧道 大变形 破坏特征 原因分析 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]