摘要
本文以九绵高速白马隧道为工程背景,针对洞内支护结构严重变形破坏的工程难题,基于现场地应力测试和现场监控量测分析了软岩隧道大变形特性和机理,并对施工过程所遇工程难题不同技术措施的有效性进行对比分析。在工程实践的基础上,对现场典型的大变形案例进行支护工艺探讨,并对白马隧道施工经验进行归纳总结,以期为诊治山岭隧道软岩大变形工程难题提供实践经验和技术指导。
Based on the engineering background of Baima Tunnel of Jiuzhaigou-Mianyang High-speed Railway,this paper analyzed the large deformation characteristics and mechanism of soft rock tunnel based on the in-situ stress test and field monitoring measurement,and compared the effectiveness of different technical measures for engineering problems encountered in the construction process.On the basis of practice,the supporting technology of typical large deformation cases on site was discussed and the construction experience of Baima Tunnel was summarized.It provides practical experience and technical guidance for the diagnosis and treatment on engineering problems of large deformation in soft rock of mountain tunnel.
作者
蔡涛
CAI Tao(Tiezheng Testing Technology Co.Ltd.,Jinan Shandong 250014,China)
出处
《铁道建筑技术》
2021年第2期141-145,共5页
Railway Construction Technology
关键词
软岩隧道
高应力
大变形
施工
支护实践
soft rock tunnel
high stress
large deformation
construction
support practice
