Abstract: A method is described for the installation of slab tracks in tunnels, in particular tracks on a slab of concrete, with the optimized design and execution characteristics, and substantially increased performance compared to the normal known methods. The method includes a succession of phases executed in order, with the help of an auxiliary track, Consisting of the design of the construction section, the construction of the railway yards, assembly of the auxiliary track from the evacuation platform, execution of the foundation base, assembly of the track in slabs, transitions from slab track—ballast track, and placement of long bars and welding.

Abstract: A method for installing railway tracks onto ballast beds avoiding the need for installing any type of auxiliary track. The method comprises successive stages to be carried out after having located the sleepers onto the ballast bed, consisting of fixing and laying of a pair of rails from a mini train, for the transport of the rails with the fastening and traction of same up to their complete unloading, the operation being guided by means of a discharge wagon; supporting the rails on rollers for the longitudinal movement thereof; cutting, squaring and fixing the adjacent ends to the consecutive rails; raising the rail with the help of a crane, and removing the rollers; partial fastening of the track and placement of the rollers for the next cycle, and removing the tractor from the mini train, and the final fastening of the rails.