广珠西线三期工程深湾隧道为三车道大跨度连拱隧道,进口浅埋段下穿高压电塔,施工风险较大,需进行特殊设计和施工。利用Midas/GTS有限元程序建立地层-隧道-电塔桩基的模型,对深湾隧道下穿电塔施工全过程进行三维数值模拟,分析了电塔与隧道相互之间的影响。结合现场监测数据与数值模拟结果,对加固和施工方案实施效果进行了评价,可为类似工程提供参考。 Deep Bay Tunnel, Phase III of the Guangzhou-Zhuhai West Line Project, is a three-lane long-span multi-arch tunnel with imported shallow buried sections passing through the high-voltage electrical tower. The construction risk is relatively large and special design and construction are required. Using the Midas / GTS finite element program to establish the model of the stratum-tunnel-electric pile foundation, a three-dimensional numerical simulation of the whole process of the deep-trench tunnel construction was carried out and the influence of the electric tower and the tunnel on each other was analyzed. Combined with the on-site monitoring data and numerical simulation results, the implementation effect of reinforcement and construction scheme are evaluated, which can provide reference for similar projects.