摘要
阐述了现阶段隧道预留变形量设置存在的问题,结合实际工程,通过数值模拟计算对深埋大断面薄层砂岩隧道的净空变形作出了预测,并根据实测变形数据分析及回归计算确定了隧道累计变形极值,为预留变形量的合理设置提供了依据,同时根据隧道变形特征提出了控制同类地层隧道变形的关键技术措施。
This paper expounded the existing problems of the settings about preset deformation for tunnels at the present stage. By combining practical engineering, the numerical simulation calculation was adopted to forecast the clearance deformation of deep buried large section tunnel in flagstone, and then according to the measured deformation data analysis and regression analysis, the extreme deforma- tion values of tunnel structure was determined, providing the basis for the reasonable setting of preset de- formation. Additionally, the key technical measures about controlling the deformation of tunnels in the similar stratum were put forward based on the deformation characteristics of the tunnel.
作者
何伟
杨朝帅
郭波前
张峰
HE Wei YANG Chaoshuai GUO Boqian ZHANG Feng(Survey, Design and Research Institute of China Railway Tunnel Group,Henan Luoyang 471009, China)
出处
《低温建筑技术》
2017年第4期82-85,共4页
Low Temperature Architecture Technology
基金
中铁隧道集团有限公司科技创新计划"膨胀性页岩变形控制技术研究"(隧研合2013-04)
关键词
预留变形量
薄层砂岩
高地应力
回归分析
preset deformation
flagstone
high geostress
regression analysis
