Heavy-haul railway lines mainly inc

Heavy-haul railway lines mainly include subgrade, bridge and tunnel buildings, track, etc., which should be a complete engineering structure. The components of heavy-haul railway lines are coordinated with each other. Problems in any component or link will affect the normal operation of the whole line. Generally speaking, sub-load railway has the characteristics of large carrying capacity, high operating density, large axis and heavy stars. In the process of railway train operation, the quality of railway equipment is most directly related to whether the railway can operate. The prerequisite for the successful completion of railway transportation task is to have a complete railway line as the transportation foundation. As the pressure of heavy-duty railway trains directly acts on railway lines, with the long-term traffic of trains, it will cause the gradual wear of railway rails and connectors, thus affecting the change of the original dimensions of tracks and sleepers and causing the deformation of track beds and subgrade, resulting in certain accident threats in railway transportation. Therefore, in order to ensure the stable and safe transportation of trains, it is necessary to treat and maintain the common diseases of railway lines in time, maintain the railway lines scientifically and reasonably, effectively prolong the service life of the lines, ensure the safety and reliability of transportation and improve the economic benefits of railway transportation