was awarded the contract for the complete supply of geotechnical
instruments to the Copenhagen Metro Line, Denmark.
Metro Line is among the world’s most modern subway systems and a 24/7
rapid transit system in Denmark. The metro line is being expanded with
the new “Cityringen” subway loop. The entire, approximately, 15.5 km
long metro route proceeds through two parallel tunnel tubes, M3 and M4,
in the subsoil of Copenhagen.
Metro rail tunnel construction on
such a large scale in the heart of an old city poses a great potential
risk, not only to the construction activities but also to the existing
structures in the vicinity. To ensure the safety of structures during
the construction activities, a number of geotechnical instruments have
been used for automatic tunnel monitoring in order to detect possible
deformations timely. This allows related authorities to take immediate
preventive measures, in case of any alarms.
The instruments supplied included a number of load cells with automatic
data loggers responsible for the geotechnical monitoring of the
project. The data loggers were supplied with software to transfer data
in a suitable format to Kronos, the central database management system
for the project.