Operation of the Storm Surge Barrier

Wetted works (sill structure)

The sill structure on the bottom of the New Waterway has three functions:

• The formation of a flat base and foundation for the retaining walls, which are positioned on the sill- blocks with the aid of fenders.
• Cutting down the flow of water once the barrier is closed.
• Holding in place the subgrade on which the blocks are based.

1. Sill-blocks
2. Bottom protection and filter-bed
3. Dredging works
4. Raking the surface
5. Dumping the filter-bed