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Höllberg A38 tunnel, Thüringen, Germany

The project:


Traffic project German Unity No. 13 A38 Breitenworbis-Bleicherode segment Construction of the Höllberg tunnel


Execution company:

Baresel GmbH


The problem:


Drainage via open dewatering during tunnelling operations.


Our solution:


Multiple submersible pumps from the KTV and KTZ series were used. The special characteristics of Tsurumi pumps, such as an inside mechanical seal, shaft sleeve with oil ring and a patented oil lifter allow them to be used in 24-hour suction operation.

In the event of abrasive and corrosive utilization, stronger wear and tear will take place naturally in certain components. With regards to the above application wear and tear can take place mainly in impeller, agitator, suction plate, shaft sleeve, oil ring, mechanical seal, pump casing, strainer, motor casing and discharge coupling. Depending on the working conditions the lifetime of those parts might vary significantly and can be shorter than the legal warranty period.
In this regard, please pay attention to our general terms and conditions that we also send to you by mail on request.