Construction of underground tunnel line 3 North, lot 1
Consortium U-Bahn Linie 3 Nord
Ed. Züblin AG, Ndl. Tunnelbau
Ed. Züblin AG, Ndl. München
Pumping off the water arising during mined underground tunnel heading.
Use of 9 submersible waste water pumps of Type KTZ32.2.
Because of the highly calcareous water deposits occur in the pump hydraulics resulting in pump blocking. However, due to the mechanical seal positioned completely inside und the additional shaft protection sleeve with sealing ring the pump can be put quickly with little effort and without exchanging any wear parts back into operation again.