Land Reclamation and Beach Replenishment

Land reclamation projects such as Palm Island in Dubai or the Chek Lap Kok Airport in Hong Kong are the dredging industry’s showpiece to the wider public. Sand is dredged from the sea or in harbours and given a new destination, for instance to create new land for residential, recreational or industrial purposes.

But the purpose of land reclamation is dual. Climate is changing and we can no longer ignore it. Rising sea levels are a threat to our coasts. In order to protect these coasts and shores against erosion and the advancing water, sand is reclaimed.

 

Nigeria, Dangote Lekki Refinery Reclamation Project

Reclamation of future oil refinery area (1,850 ha)

Reclamation of future oil refinery area (1,850 ha)

Key figures
Country

Nigeria

Client's name

Dangote Oil Refining Company Ltd.

Contractor's role

Main contractor (Part JDN: 100%)

Period

22.05.2015 - 31.12.2016

Technical specs
Equipment

TSHDs Gerardus Mercator, Leiv Eiriksson, Cristóbal Colón (incl. landlines, floating pipelines and sinker lines)

Scope

Reclamation works. Pumping distance between 2 km and 8 km. Reclamation area to be raised from +1.5 m to +3.0 m.

Volume

Dredging: 30,000,000 m³
Reclamation: 30,000,000 m³

Soil

Sand

Dredging depth

-20 to -70 m CD

Other works

Roller compaction

Belgium, Beach renourishment De Haan-Wenduine

Key figures
Country

Belgium

Client's name

Flemish Government

Contractor's role

Partner in Joint Venture Vlaamse Baaien (Part JDN 50%)

Technical specs
Equipment

Trailing Suction Hopper Dredgers Alexander von Humboldt and Taccola

Scope

Beach nourishment

Soil

Sand

Volume

Reclamation: 718,578 m³

Dredging depth

-29 to -12 m

The Netherlands - Dutch Coastal Protection Program

Sand replenishment along the Dutch coast

Sand replenishment along the Dutch coast

Key figures
Country

The Netherlands

Client's name

Ministry of Infrastructure and Environment

Contractor's role

Joint Venture Partner (Part JDN 50%)

Technical specs
Equipment

Trailing Suction Hopper Dredger Charles Darwin

Scope

Beach replenishment with Trailing Suction Hopper Dredger, pumping ashore
Foreshore suppletion with Trailing Suction Hopper Dredger, dumping and rainbowing

Soil

Sand ~275 dmf

Volume

Onrustpolder: Beach replenishment: 414,000 m³
Onrustpolder: Fore shore suppletion: 1,750,000 m³
Den Helder: Fore shore suppletion: 4,025,000 m³

Dredging depth

~23 m NAP

U.A.E., Palm Island II in Dubai

Reclamation Works for the Offshore Creation of an artificial Island in a Palm Tree's Shape - Palm Island
Rock Revetment and Installation Works for the Crescent (Breakwater)

Reclamation Works for the Offshore Creation of an artificial Island in a Palm Tree's Shape - Palm Island
Rock Revetment and Installation Works for the Crescent (Breakwater)

Key figures
Country

Dubai (U.A.E.)

Client's name

Palm Island Development (Nakheel)

Contractor's role

Main Contractor

Period
April 10, 2002 to May 28, 2008

Hong Kong, Chek Lap Kok Airport

Building of the platform for the new airport at Chek Lap Kok

Building of the platform for the new airport at Chek Lap Kok

Key figures
Country

Hong Kong

Client's name

Provisional Airport Authority

Contractor's role

Joint Venture Partner (Part Marine Works: JDN 50%)

Period
December 1, 1992 to January 2, 1996
Technical specs
Scope

Dredging and reclamation works
Dry earth works

Equipment

Trailing Suction Hopper Dredgers J.F.J. De Nul, Vasco da Gama (10,000 m³), Sanderus
Cutter Suction Dredger Kaerius

Soil

Sand and mud

Volume

Dredging:
- unsuitables: 69,000,000 m³
- overburden: 75,000,000 m³
Reclamation:
- land fill: 122,000,000 m³
- marine fill: 76,000,000 m³ (incl. rainbowing)
Shore protection: 10 km of shore protection from variable depths till -25 m

Dredging depth

up to -45 m

Man-hours

0.1% of contract value

Vietnam, Ha Tinh Steel Mill Complex

Formosa Plastics Group of Taiwan decided to build a new Steel Mill Complex in the poorest province of Vietnam, Ha Tinh, also known as the forgotten province....

Formosa Plastics Group of Taiwan decided to build a new Steel Mill Complex in the poorest province of Vietnam, Ha Tinh, also known as the forgotten province. The complex is located on the northern coast and is expected to become one of the world’s largest producers of steel sheets.

To construct this complex, a total of 2,000 ha need to be reclaimed. The required dredged soil, a total of 80 million m³, is being sourced from the construction of the adjoining Son Duong Port. In this harbour Jan De Nul Group started the dredging works of the 8 km long channel at a depth of up to 27 m and the dredging works of the harbour basin at 24 m. During the implementation of this project, at peak moments up to 1.5 million m³ was reclaimed per week.

Key figures
Country

Vietnam

Client's name

Formosa Ha Tinh Steel Corp

Contractor's role

Main Contractor

Technical specs
Scope

Capital Dredging, Port Infrastructure, Rock Dredging, Soil Stripping and Dry Earth Excavation

Equipment

Trailing Suction Hopper Dredgers Juan Sebastián de Elcano, Leiv Eiriksson, Cristóbal Colón, Vitus Bering, Vasco Da Gama
Cutter Suction Dredgers Ibn Battuta, J.F.J. De Nul, Zheng He
Split Hopper Barges L'Aigle, L'Etoile, Le Sphinx, Astrolabe, Arent, Leeuw, Marquis de de Prie, Tiger

Soil

Silt, sand, clay and rock

Volume

Dredging: approx 80,000,000 to 130,000,000 m³
Reclamation: approx. 80,000,000 m³
Dry Earth Excavation: approx 8,000,000 m³

Dredging depth

up to -27 m