Coastal protection structures

Physical modelling to define strategies for adapting coastal protection structures.

What we do

  • Studies of coastline management methods
  • Rehabilitation or adaptation of existing protection structures
  • Studies of the impact of developments on coastal morphodynamics and coastline changes
  • Assessment of flood risks
  • Definition of mitigating measures to accompany the implementation of development works. 

Rockfill coastal protection in Wissant  | Artelia Hydraulics
Rockfill coastal protection in Wissant

Wave flume study of the backshore protection in Wissant | Artelia Hydraulics
Wave flume study of the backshore protection in Wissant

Our expertise

Slope protection for the "Ilot aux Oiseaux" island (Seine estuary) | Artelia Hydraulics
Slope protection for the "Ilot aux Oiseaux" island (Seine estuary)

Three-dimensional model of stability of the protection | Artelia Hydraulics
Three-dimensional model of stability of the protection

  • Modelling using a wave flume (2D) or wave tank (3D) to study the stability of protection structures: groynes, breakwaters, backshore protection
  • Measurement of the forces and pressures exerted by breaking waves on structure facings, crest walls and backshore revetments
  • Measurement of overtopping of structures and risks of flooding behind the coastal strip.
  • Implementation of movable-bed sedimentological modelling to:
    • examine long-term or seasonal changes to the coastline
    • study changes to the bed profile during storm periods, erosion risks at the toe of structures, and scour protection systems
    • analyse the impact of developments on longshore drift and effects on coastal morphodynamics (quantify risks and volumes of sedimentation and/or erosion, estimate coastline retreat)
    • investigate and develop management methods combining effective protection with limited impact on the ecosystem: beach nourishment, dune strengthening, bypass systems, development works, relocation of elements at risk further inland.

 

 

Aerial view of the Kalaat Landalous sand spit (Tunisia) | Artelia Hydraulics
Aerial view of the Kalaat Landalous sand spit (Tunisia)

Erosion at the toe of the backshore revetment at La Grande Motte (wave flume study) | Artelia Hydraulics
Erosion at the toe of the backshore revetment at La Grande Motte (wave flume study)

Development of the sand spit in a movable-bed physical model | Artelia Hydraulics
Development of the sand spit in a movable-bed physical model