摘要
结合我国兰渝铁路、兰新铁路、成兰铁路等典型挤压性围岩铁路隧道的建设经验,系统性阐述了挤压性围岩的地质背景和构造特征,分析挤压性围岩形成的条件;探讨挤压性围岩的变形机理和变形特征;提出基于变形潜势的挤压性围岩变形等级划分标准,并研究掌子面上易操作的变形潜势判定方法,总结勘察、设计、施工阶段变形潜势划分依据;基于乌鞘岭隧道,兰渝铁路隧道等相关工程研究,提出挤压性围岩隧道设计新方法及变形控制技术。研究结果经过相关工程检验,结构长期稳定,措施安全可靠,可为类似工程提供参考。
Based on the construction experience of typical squeezing surrounding rock tunnels along the railways such as Lanzhou—Chongqing Railway,Lanzhou—Xinjiang Railway and Chengdu—Lanzhou Railway in China,this paper systematically described the geological background and tectonic characteristics of squeezing surrounding rock,and analyzed the conditions of squeezing surrounding rock formation.The deformation mechanism and characteristics of squeezing surrounding rock were discussed.The deformation classification standard of squeezing surrounding rock was proposed based on deformation potential,while the deformation potential determination method that is easy to operate on the tunnel face was studied.The basis for the classification of deformation potential in survey,design and construction stages was summarized.Based on relevant engineering studies such as Wushaoling Tunnel and Lanzhou—Chongqing Railway Tunnel,a new method and deformation control technology were proposed for the design of extrusive surrounding rock tunnel.The research results have been tested by relevant projects,proving the long-term stability of the tunnel structure and safe and reliable measures for such tunnels,which can provide reference for similar projects.
作者
李国良
李宁
丁彦杰
刘志春
LI Guoliang;LI Ning;DING Yanjie;LIU Zhichun(State key Laboratory of Rail Transit Engineering Informatization,Xi’an 710043,China;Engineering Research Center of Railway Industry of Construction Technology for Long Tunnel in Special and Complex Environment,Xi’an 710043,China;College of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2022年第3期24-38,共15页
Journal of the China Railway Society
基金
中国铁建股份有限公司2019年度科技重大专项(2019-A04)。
关键词
挤压性围岩
大变形
变形潜势
设计方法
变形控制
squeezing surrounding rock
large deformation
deformation potential
design method
deformation control
