摘要
北京地铁7号线下穿既有10号线,结合7号线施工现场监测数据,基于有限差分方法,对施工引起的地表沉降进行数值麒分析,得到横断面地表沉陷曲线及沿隧道方向的纵向沉降曲线规律。引入相关实际工程施工引起的地表沉降与数值仿真分析所得地表沉降相比较,得出两者的隧道纵向和横向的地表沉降规律相似,但数值相差较大,最后,提出了因浅埋暗挖工法引起的地表沉降的控制措施,对实际相关施工具有现实的指导意义。
Based on the background of project subway line 7 under crossing the line 10 existed. Surface subsidence is studied so as to analyse the mechanism of monitoring date by using finite difference method （FDM） in this paper. It could be gotten that the ground surface subsidence lines along the transverse and vertical section. The research results coincide with the subsiding geosynclines width. Surface subsidence rule of transverse and vertical section of tunnel is similar. The surface subsidence control measures are suggested, which has realistic significance to the construction monitoring.
出处
《建筑技术开发》
2015年第12期68-72,共5页
Building Technology Development
关键词
地铁隧道
有限差分法
监测
风险评估
subway tunnel
finite difference method
monitoring
risk assessment
