大跨度隧道施工地表沉降分析  

Analysis on floor subsidence in large-span tunnel construction

作　　者：牛野[1] 

机构地区：[1]中铁第四勘察设计院集团有限公司

出　　处：《山西建筑》2008年第19期306-307,共2页Shanxi Architecture

摘　　要：以广州地铁二号线公园前站—纪念堂站区间为例,通过有限元程序ANSYS对软弱围岩浅埋暗挖大跨度隧道的开挖与支护进行了平面数值模拟,以地表沉降为控制基准,对地表沉降影响进行了研究,结果表明,采用双侧壁导坑法施工是可行的。Taking the example of the section from Front Park Stop to Memorial Hall Stop of subway No. 2 line in Guangzhou, it applies the limited element program ANSYS to make a plane digital simulation of the excavation and support of soft surrounding rock shallow-buried subsurface excavated large-span tunnel. With floor subsidence as the control criterion, it makes a research on the influence of floor subsidence, and the research result shows double side-drift method is feasible.

关 键 词：隧道 大跨度 地表沉降 双侧壁导坑法 

分 类 号：U455[建筑科学—桥梁与隧道工程]