Dam Reservoir Emosson - Switzerland
Lowering of concrete manifold caisson about 100m

Scope of work performed

Lowering of two concrete manifold caissons

Main Contractor

Willy Stäubli Ing. AG, Zürich

VSL Entity

VSL Heavy Lifting Switzerland


September 2011 and 2012

Project Description

At 1,930m above sea level VSL heavy Lifting lowered two conceret manifold caissons about 100m deep into the dam reservoir of Emosson precisely on the planned spot.

Each manifold caission, weighing 2,000t, was manufactured onshore, attached underneath a pontoon by 4 SLU-120, shipped to the final position determined by GPS and lowered by strand jacks on the ground of the lake.

The successfully completed operations took place in September 2011 and 2012. The manifold caissions are part of the new pump storage power plant Nant de Drance.

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