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Marmaray Undersea Tunnel, Turkey

The project:


Construction of a railway tunnel under the Bosporus


Executing company:

Taisei Corporation, Japan


The problem:


Construction of a multi-track rail tunnel under the ocean floor to join the two continents. Dewatering the site and keeping it dry during the construction period.


Our solution:


To dewater the site, 14 KTZ pumps and 16 LB pumps were employed in constant use. Due to their robust cast iron design, KTZ pumps are particularly suited for use on tunnel construction sites. The LB pumps are light, single-phase pumps for emergency use.

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