That way, difficulties during the retreating work of the microtunnels in the cross-section are avoided as well as involved vibrations during the excavation. The scope of services of this freezing project include:
- installation and removal of the brine feed tubes, the freezing units and the brine circulation pumps
- installation and removal as well as control of systems for measurement, approx. 800 temperature sensors are installed
- control of the freezing system during the freezing up phase and in the intermittent maintenance phase as well as adjustment of the freezing system to the different excavation and building phases
- planning, control and monitoring of the innovative method "water-filled microtunnel"