TBMis a large-scale industrial tunnel construction operation system that integrates mechanical,electrical,and hydraulic technologies.It has the characteristics of large-scale,rapid,automated,and process oriented,and can enable the excavation,support,replacement,maintenance,slag removal,transportation,and other processes of tunnel construction to operate simultaneously.TBM has the advantages of fast excavation speed,short construction period,good working environment,ecological friendliness,and high comprehensive benefits,making it an important choice for tunnel construction methods both domestically and internationally.For some long tunnels,considering the route,construction period,and ecological environment,TBM excavation method has become a necessary method.