Advanced Intervention Phase of High-Speed Rail Construction Catenary and Track Synchronization Precise Measurement Fine Adjustment Exploration

In order to achieve high smoothness and high stability of high-speed railway catenary, the exploration of high-speed railway catenary equipment and track synchronous precise measurement and adjustment is carried out in early intervention stage. On the basis of elaborating the relationship between catenary and precise measurement network, this paper explores the implementation of synchronous precise measurement and adjustment of catenary and track in high-speed railway from four aspects of key contents, important guarantee, basic method and necessary measures, and lays a solid foundation for implementing ‘zero defect’ of dynamic acceptance of catenary through early intervention and whole process control.