随着国家对基础建设投资的加大，铁路、公路等大型隧道或地下通道项目逐步增多，大型泥水盾构机也得以快速发展，逐步成为国内过江隧道施工的主流设备。如何用好大型泥水盾构关键在于提高设备的完好率，而设备完好率又取决于设备的维修保养。所以，盾构机的维修保养直接影响到盾构隧道施工的质量及施工进度，结合狮子洋隧道SDⅡ项目的泥水盾构施工实列，在全面总结并分析大型泥水盾构机的维修保养经验后，提出了大型泥水盾构机维修保养的“四化”管理模式，以此提高维修保养水平，实现用好盾构机延长其使用寿命的目的。

With investment enlargement of infrastructure by the country and gradual increase of such large scale tunnels or underground passages as railways and highways, large scale slurry shield machine also develops rapidly, gradually becoming the major equipment for the construction of domestic river-crossing tunnels. Improvement of the rate of equipment in good conditions is critical to make full use of large scale slurry shield machine while the rate of equipment in good conditions is determined by the repair and maintenance of the equipment. Ant＼d therefore, the repair and maintenance of shield machine has a direct impact on the construction quality and progress of shield tunnel. With the practice of SDII Project of Shiziyang Tunnel by slurry shield construction and following a comprehensive summary and analysis of experience in the repair and maintenance of large scale slurry shield machine, this thesis the "Four Standardizations" management mode for the repair and maintenance of large-scale slurry shield machine to improve the repair and maintenance level and to achieve the objective of making full use of the shield machine and prolonging its service life.