5. Initial sediment deposition at
the foot of the fronds
Further sediment deposition
over the Frond Mat
Reinforced Sediment sand bank near
full development with a few short
length of Frond exposed
Diver inspecting the fully developed
sediment sand bank with short
random Fronds exposed
CREATION
OF
SANDBANK
UK
SOUTHERN
NORTH SEA
21. Recent Scour
Rectification
and
Prevention
Projects
2004
Marathon Oil,
Concrete
Gravity Based
MOPU, Gabon
2006 (ongoing)
Shell Brunei,
Pipeline
Freespan
Rectification
and
Stabilisation
2006 to 2008
Norfolk Broads
Riverbed and
Bank Erosion
Rectification
and
Reinstatement
2005/6/10
ODE & E.ON
Scroby Sands
2012 to 2015
SASMAP
Project, EU
2014
GMS
Endeavour
Anglia A –
North Sea
2005
Bass River, USA –
National Grid
Reinstatement and
Protection of
polluted riverbed
2006/7
(ongoing)
SINOPEC
China, Bohai
Bay
2009 to 2011
BP Vietnam,
Lan Tay Subsea
Remedials
2011 (2004)
Arklow Bank
Offshore Wind
Farm
2013 (ongoing)
Pertamina, Indonesia
Offshore Platform Leg
Scour Protection and
Remediation
22. Lower installation cost compared to that of other currently used systems
‘One-off’ cost only – providing a permanent engineering solution to scour that
does not require follow up maintenance or re-application associated with other
‘hard’ methods of protection
Scour is stopped immediately upon installation
Progressive build-up of a permanent fibre-reinforced sandbank
Environmentally acceptable: the sandbank contours follow and blend into the
riverbed or seabed, and do not negatively affect marine life, the growth of
vegetation, or fishing
Effective in deep or shallow water
Impact damage protection by cushioning structures with energy absorbing
sand
Load bearing solution – natural agitation of fronds creates a high degree of
sand compaction
Field proven in various locations globally
Key
Benefits
Pilarczyk (2000)
Geosynthetics and
Geosystems in
Hydraulic and Coastal
Engineering
