Glossary.

Single-leaf shaft construction method using transferable formwork to complete the final construction of the shaft during the shaft sinking process. The transferable formwork is filled with concrete in-situ (in place on the construction site) and once the concrete has hardened it forms the finished shaft construction and often incorporates steel reinforcement. The concrete hardening process means parallel shaft construction is restricted.

Determines the current roll angle of the laser station and transfers this data via the control unit to the computer of the plc system.

working air

Intermediate jacking stations are needed for long distance pipe jacking. Cylindrical steel cans with integrated hydraulic cylinders are built into the pipeline at defined distances and put into operation when the permissible jacking force is reached at the main jacking station.