Construction of a 360 m long tunnel with three lanes as component of a municipal bypass system; completion: Spring, 2006.
ARGE Tunnel Tunnel Siegkreisel, Betzdorf
Hochtief Construction AG
Kirchner Bau GmbH
Alpine Bau Deutschland GmbH
Pumping off of the water arising during the underground tunnel heading.
Use of submersible pumps of type KTZ32.2, these being operated in permanent snore mode (dry running) during the complete construction period. This application is no problem for the pump thanks to the patented oil distributor in combination with the rotating mechanical seal, which is located completely internally.