Geotechnical consultancy agency
Knowledge & Innovation

projects



Immersed tunnel - Fehmarn Belt

For the construction of the longest immersed tunnel in Europe, Knowingeo contributed to the geotechnical design of the land reclamation and coastal protection works. The tunnel connects Lolland (Denmark) to Fehmarn (Germany). Spanning approximately 18 km the tunnel is currently under construction. Prior to the placement of the tunnel elements, trenching works were carried out and the dredged material is reused as fill.

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Image sources Image 1: Tunnel Online - Image 2 & 3: The Fehmarnbelt Project LinkedIn



Work done by Knowingeo

  • Detailed geotechnical design of land reclamation works
  • Geotechnical design of coastal protection structures
  • Settlement, slope stability and ground improvement analyses


Clients

  • Boskalis
  • Van Oord





Dike Reinforcement - Krimpen aan den IJssel – Gouderak 

To safeguard the flood defense, reinforcement works along a 10 km levee were required. The soft subsoil conditions resulted in insufficient slope stability and make the levee susceptible to significant ground deformations. Given the limited available space, with hundreds of buildings along the dike, the reinforcement consists primarily of combi-walls. These were installed using vibration-free methods.

Image source: Gebr. De Koning


Work done by Knowingeo

  • Design of retaining structures
  • Soil-structure interaction modelling to assess construction-induced deformations in adjacent buildings.
  • Support project preparation team.


Clients

  • Van Hattum en Blankevoort
  • Boskalis





Dike Reinforcement - Marken

To increase the flood protection system of the picturesque island of Marken, major dike reinforcement works are being performed. Due to the soft soil underneath, the levees are susceptible for slope instability and settlement.

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Images courtesy of: Rijkswaterstaat and Drone Addicts


Work done by Knowingeo

  • Review and evaluation of the contractor's geotechnical design, work execution plan and method statements. 
  • Follow-up supervision during construction, on behalf of the Rijkswaterstaat 
    (Dutch Ministry of Infrastructure and Water management).
  • Multidisciplinary collaboration with the contractor's and Rijkswaterstaat's project teams.
  • Representing the Rijkswaterstaat's project team in meetings with external experts and other stakeholders.

Clients

  • Rijkswaterstaat