Solutions for partial- or full- pressure shaft linings are available. 

Purpose designed equipment allow effective and efficient insertion and welding of steel pipe liners.

Different solutions for lining and fastenings are based on evaluations of the actual geological conditions, rock pressure and cover/stability along the tunnel routing.


The two examples under shows a partial lining covering the lower section of the tunnel, and a full lining covering the whole tunnel:

© 2019 by Norhard AS

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