Açu breakwater armouring açu 2 - placement
The project consisted in building an access bridge of nearly 3 km long and 26.6 m wide, a link to the coast, to create a 10 berths port facility for mooring vessels. Offshore loading and unloading facilities will crete an important coal and iron ore facility in Brazil.
In this project, CLI was involved as the CORE-LOC™ technology provider and provided technical assistance, 3D placing drawing and training to implement the technology, advice on best practices, and onsite technical assistance
Special features of the project
The initially designed breakwater as a rubble mound structure of almost 2 km long protected with CORE-LOC™ armour units of 3.9 m3 and 5 m3, was modified.
The revised design protects the access bridge with caissons and a 600 m long breakwater connects to the caisson as a rubble mound with a crown wall. It is protected with CORE-LOC™ armour units of 3.9 m3 on the slope. The contractor has placed around 4 700 units using a crawler crane and POSIBLOC™ system.
- Design wave conditions: Hs 2.2m - Tp 9s
- Depth of the units at toe level : -9.1m
- Length of the structure : 600m
- Crest level of the structure: +6.75m
- Number of units: 4700 units
- Size of units: 3,9 m3
- 19 rows in the slope POSIBLOC™ system
- Underlayer survey with multi-beam sonar
- Placing drawing in 3D
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