根据隧道直径的大小和地质等条件，分析北京铁路地下直径线隧道工程盾构法施工中盾构设备选型考虑的因素及选择的机型，确定盾构机型配置的主要功能及对地质的适应性，并对盾构主要结构数据和配备能力进行了计算和描述。提出了盾构选型和设计中需要注意的事项和问题。

According to the diameter of the tunnel and the geological conditions, considered factors of equipment selection and the choice of models of the large diameter tunnel of the Beijing underground diameter tunnel project were analysed, the main functions and geological suitability of shield type configure were described, and the main data of the structure and equipped capability were calculated and described. The issues and problems that need to be paid attention for selection and design of shield were proposed.

韩亚丽（1963—），女，陕西西安市人，教授级高级工程师，主要从事隧道掘进机设计、制造、施工及研究工作