DEPTH OF BALLAST, FORMATION FAILURE AND SUBGRADE EROSION
Zetica’s Advanced Rail Radar (ZARR) system is deployed in many countries across the world. The system utilises ground penetrating radar (GPR) to continuously map changes in the thickness and quality of the ballast layer across a network.
Zetica Rail completed a survey for Irish Rail on the main Dublin to Cork line using an existing track geometry recording vehicle as the survey platform. The object of the survey was to map changes in the geometry of ballast layers as well as target areas of subgrade erosion, drainage problems and to detect buried structures. The results were combined with track geometry to provide a strategic tool for maintenance planning.