摘要
随着铁路、公路隧道的不断发展,穿越高地应力的隧道也不断出现,研究探讨高地应力条件下软岩隧道的变形力学特征及其控制技术有重要的现实意义。以乌鞘岭隧道深层地段围岩产生大变形的特点,结合乌鞘岭隧道岭脊地段千枚岩地层的设计施工,在现场选择一试验段,对初支内力、初支和围岩接触压力和边墙收敛进行现场试验,通过实验数据分析总结了高地应力条件下软岩隧道围岩的变形力学特征,并提出其相应的控制技术,为以后类似工程的设计施工,提供参考。
Along with the development of railway tunnel and road tunnel, there are more tunnels crossing in high ground stress strata. And the research of mechanical characteristics of soft rock tunnel deformation under high ground stress and its control technologies do show its significances. Focusing on the deformation characteristics of Wushaoling tunnel, the authors choose an experimental section to do in-situ experimentation for internal force of primary support, stress between primary support and surrounding rock and side wall convergence, combing the design and construction of Wushaoling tunnel in phyUite stratum. Then, based on the experimental data analysis, the authors summarize the mechanical characteristics of soft rock tunnel deformation under high ground stress and put forward relevant control technologies for it. The paper can provide reference for the design and construction of the similar projects.
出处
《西部探矿工程》
CAS
2014年第2期154-158,共5页
West-China Exploration Engineering
关键词
高地应力
围岩变形力学特征
现场实验
控制技术
high ground stress
mechanical characteristics of sur- rounding rock
in-situ experimentation
control technology
