Cityringen tunnelling complete
The excavation of the 15,5 km twin-bore tunnels by the TBMs “Nora”, “Tria”, “Minerva” and “Eva”is completed after a four years journey. The second project for the metro in Copenhagen, the “Nordhavn” extension reached also a mile stone with the breakthrough of the TBM “Frida” under Østersøgade. Both lines are on schedule for opening in 2019.
GEODATAs Danish JV company SMT was responsible for the execution of the complete geotechnical monitoring program on the surface, in the tunnels and C&C sections. Thousands of different sensors were supplied, installed and measured. Special care had to be taken to sensitive historic buildings. To minimize the risk of damages automatic monitoring systems like Georobots for 3D-displacements and in-place inclinometers were applied. The enormous amount of data was - and is still - successfully managed