摘要:复杂城市环境下地铁出入口开挖施工是地铁施工的重点和难点。本文结合武汉地铁中山公园站一号出入口暗挖段施工实践，分析大管棚施工和浅埋暗挖工法对地表及周边环境的影响，对地铁出入口大管棚暗挖施工进行跟踪信息化监测，通过对监测数据的分析及时调整施工工序及改善施工工艺，保持开挖支护过程中的结构稳定和控制地层变形稳定，避免出现地面及拱顶的过量沉降和坍塌。通过监测结果表明：制定合理的施工方案，利用动态施工的信息化施工方法，可以有效的控制地层影响，同时也为类似工程提供参考。

Abstract: In complex urban environments, excavation of the subway entrance is the important and tough part in subway construction. On the basis of the construction practice in the bored section of Zhongshan Park Station Entrance one, this paper systematically analyzed the effects taken by exceeding support with large pipe-shelf and method of shallow stratum to ground surface and the surroundings, tracked and monitored the process of excavation with large pipe-shelf for the subway entrance. Analyzing the monitoring data to adjust and improve the construction technology, therefore keeping the stability of structure and ground deformation in the process of excavation. It could avoid the excessive settlement or even collapse of ground and vault. The results of monitoring shows that formulating a reasonable construction scheme, using information construction method of dynamic construction can effectively control the effects to ground, and also will give a good example and reference to other similar construction projects.