在详细调研了国内外大量相关工程实例的前提下，归纳总结出超大断面浅埋暗挖地铁车站的主要开挖方法、关键施工技术以及各工法的优点和适用范围。通过理论分析与有限元数值模拟计算相结合的方法，利用工程现场实测数据进行对比研究，主要从隧道围岩变形、支护结构受力及施工沉降的角度，经过方案对比分析论证了暗挖车站主体隧道采用台阶法+临时竖向钢支撑的开挖支护方法的可行性及优越性；并分析得出台阶法开挖施工时，各台阶施工的沉降特点。 根据工程的实际情况，利用数值模拟计算对重要的施工技术参数进行了优化研究，提出了合理的参数取值范围。分析表明：拱顶埋置深度小于1.0 时，施工沉降随埋深的增加而增加；拱顶埋置深度大于1.0 时，施工沉降随埋深的增加而减小，合理的拱顶埋置深度为9.0m~12.0m；适当增加台阶数量能提高隧道掌子面的稳定性，合理的台阶数量为四台阶；在一定范围内提高围岩加固范围能有效地减小围岩变形和施工沉降，但是过大的注浆范围反而不利于围岩受力及对施工沉降控制，合理的围岩加固厚度为：2.0m~3.0m；在保证施工空间要求的前提下，台阶长度越短越有利于沉降控制，合理的台阶长度为3.0m~5.0m。 对于超大断面浅埋暗挖地铁车站施工沉降的预测及控制工作，应根据其施工沉降的特点有针对性地进行。本文通过数值模拟所得的施工沉降规律对工程施工沉降进行超前预测，并将施工沉降的总控制值和预警值分配到各个开挖步骤，建立起严密的动态沉降控制体系能更好地控制施工沉降，保证施工安全，对类似工程施工具有一定的指导意义。

According to research on a large number of relevant engineering projects, the paper has summarized the main excavation methods, the key construction technologies and each method’s advantages and their scope of application about super-large section subway station excavated by shallow mining method. After theoretical analysis, I have done a simulation study on the benching tunneling method by numerical simulation method. And demonstrate this excavation method’s feasibility and superiority by the standards which include surrounding rock deformation, structural stress and the settlement of construction. Meanwhile, this paper has compared the results of simulation with the measured data. After analyzing the data of different kinds of benching tunneling methods, the features of subsidence is given. According to the actual engineering situation, the reasonable range of parameters is present by studying the optimization of some important construction parameters with the numerical simulation method. The analysis shows that when the vault’s embedded depth less than 1.0 , the settlement increases with the increase of embedded depth; when the depth greater than 1.0 , the settlement decreases with the increase of embedded depth, while the reasonable range of the depth is 9.0-12.0m. Increasing the number of steps appropriately can improve the stability of the tunnel face, while the reasonable number of steps is 4; Besides, improving the reinforcement range in a certain range can effectively reduce the surrounding rock deformation and the construction settlement, but it is adverse to the surrounding rock stress and the settlement control when it is beyond the rang, while the reasonable reinforcement range is 2.0 to 3.0m. On the premise of guarantee the construction space, reducing the step length is advantageous to the settlement control, while the reasonable step length is 3.0 to 5.0m. Predicting and controlling the construction settlement about the super-large section subway station excavated should be based on the characteristics of construction settlement. In order to establish a rigorous dynamic settlement control system, this paper has reach the rule of the settlement of construction by numerical simulation method for prediction in advance about construction settlement, while assigning the total control values and warning values of construction settlement to each excavation step. Doing this work, it can be controlling construction settlement and ensuring construction safety better. Meanwhile, it has a certain guiding significance for the similar projects.