岩土力学2011，Vol.32Issue(3)：843-848,6.
高速铁路大断面黄土隧道二次衬砌施作时机研究
Research on construction time of secondary lining of large section loess tunnel for high-speed railway
摘要
Abstract
The construction time of secondary lining of tunnel is a very controversial issue in tunneling engineering.Associating with the large-section loess tunnel construction of Zhengzhou-Xi'an high-speed passenger railway.the determinant indexes about the construction time of secondary lining are put forward.which are basic stability deformation rate and basic stability time and distance.The solving method for basic stability deformation rate was carried out with regression analysis and numerical analysis.In this case,we take the Hejiazhuang tunnel as our experimental section.the construction time of secondary lining of large section loess tunnel is studied.The study results indicate: the value of vertical deformation rate of tunnel crown less than 0.55mm/d and the value of horizontal absolute convergence rate of tunnel sidewall less than 0.17mm/d; we can construct the secondary lining.In conclusion.these results are instructive for the design and construaion on similar tunneling engineering.关键词
隧道工程/大断面黄土隧道/二次衬砌/施作时机/基本稳定速率Key words
tunnel engineering/ large section loess tunnel/ secondary lining/ construction time/ stability deformation rate分类
交通工程引用本文复制引用
路军富,王明年,贾媛媛,喻渝,谭忠盛..高速铁路大断面黄土隧道二次衬砌施作时机研究[J].岩土力学,2011,32(3):843-848,6.基金项目
铁道部科技研究开发计划项目(No.2005K001-D-2-1). （No.2005K001-D-2-1）
