为研究TBM洞内检修的施工组织和费用构成，基于引汉济渭秦岭输水隧洞岭北TBM设备检修改造的案例，详细介绍TBM主机及后配套检修方案和人工、材料、机械等资源配置，具体介绍刀盘、主驱动、推进撑靴组件检修改造的关键技术和施工方法，应用技术测定法、统计分析法、数理统计法研究TBM主机及后配套检修的费用构成，重点分析TBM检修周期、检修费与维护费的关系，检修费与设备原值的关系。结果表明： 1）TBM在使用寿命周期内有必要进行1次检修，以恢复其正常功能，检修周期为主轴承运行7 000 h左右； 2）在不具备检修洞室条件时，实施TBM洞内检修改造工期约100 d； 3）引汉济渭秦岭输水隧洞岭北TBM主机及后配套检修费约占设备原值的25%，配件费约占检修费的78%，TBM维护费系数为3.24～3.59。

To investigate the organizational aspects and cost structure associated with the maintenance of tunnel boring machine(TBM) tunnels, a comprehensive case study is conducted on the maintenance and rehabilitation of a TBM utilized in the North Qinling water diversion tunnel of the Hanjiang rivertoWeihe river water diversion project. The detailed examination includes the maintenance plan for the TBM′s main machine and its rear components, along with the allocation of manpower, materials, and machinery. Additionally, key technologies and construction methods related to the cutterhead, main drive, and gripper are discussed. Furthermore, the cost analysis of TBM main machine and its auxiliary maintenance is performed using technical measurement, statistical analysis, and mathematical statistics. The relationship between the TBM maintenance cycle, inspection cost, maintenance cost, and the original value of the equipment is scrutinized.  The findings reveal the following insights: (1) In the service life cycle of the TBM, a single overhaul is necessary to restore normal functioning, with the overhaul cycle spanning approximately 7 000 hours of main bearing running. (2) In situations where no maintenance cavern is available, the construction period for TBM tunnel maintenance and rehabilitation is estimated to be around 100 days. (3) The cost analysis indicates that the main machine and supporting equipment maintenance and rehabilitation costs for the TBM used in the North Qinling water diversion tunnel of the Hanjiang rivertoWeihe river water diversion project constitute approximately onequarter of the original equipment price. Furthermore, the cost of accessories constitutes approximately 78% of the total maintenance and rehabilitation cost, resulting in a maintenance cost coefficient ranging from 3.24 to 3.59.