Rigid contact network maintenance method

The invention relates to the technical field of catenary maintenance, and provides a rigid catenary maintenance method which comprises the following steps: S1, confirming an abrasion critical value M of a catenary; s2, measuring the abrasion value of one end of the overhead line system, if the abrasion value of the overhead line system is greater than M, marking the position as a position P, and performing S3; s3, a transition contact net is arranged at the position P; s4, the transition contact net is installed at each position where the abrasion value of the contact net exceeds M; s5, performing regular inspection on the position of the abrasion value of the ledger record; and S6, regularly inspecting the abrasion values of the overhead line system and the transition overhead line system. The transition catenary is connected to one side of the catenary with the abrasion loss exceeding the critical value in parallel through fixed connection of the transition support and the fixed support, the original catena