Using this technology allows to consistently reduce the costs, thanks to the drastic reduction of the time necessary to complete the works, of the number of people involved on site, and to the possibility of rapidly re-using the centrings for a subsequent bypass tunnel.
With this working method it is not necessary to frequently interrupt the passage of vehicles in the tunnels, as it otherwise can happen for weeks or even entire months; in this case instead, the passage is blocked only for those few hours necessary for transport and to proceed with the concrete-reinforcing operations.
The automation of the process on one side ensures a significant reduction of the risk factor of falls and injuries of staff people, since they do not have to manually install the metal support structures of the cladding panels (which are several meters above the ground); on the other side, the lower number of transport vehicles makes the risk of possible accidents at work drop.
It should be underlined that this technology makes it possible for construction vehicles to circulate during the excavation of the main tunnel and of the bypass. Moreover, if a second bypass becomes necessary, the system's shape allows the passage through the previously installed structure, making it faster to carry on the work.