作　　者： (张昭）; (李婷婷）;

机构地区： 郑州市轨道交通有限公司,郑州450000

出　　处： 《河南科学》 2017年第8期1304-1308,共5页

摘　　要： 以郑州地铁某区间的隧道施工为背景,采用基于流固耦合理论的COMSOL Multiphysics多物理场耦合的有限元软件对隧道开挖引起的地面沉降、不同的隧道埋深和地下水位进行数值模拟,并与现场实测结果进行对比分析.结果表明,隧道开挖前,渗流场的压力和应力场的有效应力沿水平方向均匀分布;地表沉降的数值模拟结果与实际较为接近;隧道埋深越深、地下水位越低对地表沉降的影响越小. Taking the Zhengzhou metro tunneling as an engineering example and using fluid-structure couplingtheory COMSOL Multiphysics finite-element analysis software,we do numerical simulation surface subsidence,thedifferent tunnel buried depth and underground water level which are caused in the process of tunnel excavation. Andthe results are compared with on-site measurements. The results show that before the tunnel excavation,seepage andstress field are evenly distributed along the horizontal direction. Numerical simulation results reflect good engineeringpractice. The lower the tunneling depths and the groundwater level,the smaller the influence on surface subsidence.

关 键 词： 地铁隧道 流固耦合 数值模拟 地面沉降