北京交通大学学报2012，Vol.36Issue(1)：19-23,5.
铁路大断面黄土隧道初期支护作用效果
Initial support action effect of large section railway tunnel in loess
摘要
Abstract
Based en Humaling tunnel, the mechanical and deformational properties of the initial support are comprehensive researched by in-situ monitoring and 3d numerical analysis, and the results of numerical simulation are compared with in-situ monitoring in order to get the state of stress which brought to the optimal parameters of initial support after excavation. The initial support effects can be evaluated. Meanwhile, several corresponding optimization measures are put forward aiming at the weaknesses of the initial support process.The practice proves that the computed results are basically consistent with the in-situ monitoring datum. It is suggested that the principle of "timely support, early closure" should be followed in order to ensure that the stability of surrounding rock deformation after excavation in Loess.关键词
黄土隧道/初期支护/现场监测/三维数值模拟Key words
loess tunnel/ initial support/ in-situ monitoring/ 3d numerical analysis分类
交通工程引用本文复制引用
扈世民,张顶立,王梦恕..铁路大断面黄土隧道初期支护作用效果[J].北京交通大学学报,2012,36(1):19-23,5.基金项目
铁道部科技研究发展计划项目资助(2009G005-B) （2009G005-B）
