摘要
为了探讨新建隧道的施工对既有隧道运营产生的影响,以西安地铁1号线二期工程段工程张后区间斜下穿既有出入为背景,分析了新建盾构隧道斜交下穿施工对既有隧道结构的影响,得到了既有隧道结构变形规律。监测结果表明:既有道床沉降沿整条测线呈现出典型的"沉降槽",沉降峰值位于2条隧道的交叉截面处;既有隧道发生了整体沉降,变形以竖向沉降为主,水平位移远小于竖向位移。
In order to discuss the influence of the construction of the new tunnel on the existing tunnel operation, taking the Xi＇an subway project as the background, the influence of existing tunnel caused by excavation of the undercrossing tunnel is analyzed, and the deformation rule of the existing tunnel structure is obtained. The monitoring results show that： the existing tracks subsidence along the entire survey line presents a typical ＂sedimentation tank＂, the settlement peak is located at the cross section of the two tunnels; and the existing tunnel has occurred in the overall settlement, and the horizontal displacement is much smaller than the vertical displacement.
作者
卢艳
LU Yan(Xi＇an Metro Co., Ltd. Operating Branch, Xi＇an 710018, China)
出处
《工程建设与设计》
2018年第11期118-119,共2页
Construction & Design for Engineering
关键词
隧道工程
盾构隧道
下穿越
现场实测
变形规律
tunnel engineering
shield tunnel
under-crossing
site monitoring
deformation rule
