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北京地铁西四车站暗挖段,地处闹市,地面交通繁忙,地质条件复杂,施工难度较大,因此在具体施工前对其施工工法和洞室稳定性进行细致研究是十分必要的。本文采用有限差分程序FLAC3D对施工方案中设计的管棚、注浆、喷层等支护措施和支护效果进行数值模拟分析,对具体工法做出了定量的评价,对后期工程的施工有很大的参考价值和一定的指导作用。
Beijing Subway Xisi Station underground excavation section, is located downtown, busy traffic on the ground, the geological conditions are complex, the construction more difficult, so before the specific construction of its construction method and the stability of cavern is necessary for a detailed study. In this paper, finite difference program FLAC3D for the construction program designed pipe shed, grouting, spray and other support measures and support effects of numerical simulation analysis of specific methods to make a quantitative assessment of the late construction of a very Great reference value and a certain guiding role.