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BAM Nuttall win three awards at the
Ground Engineering Awards 2009
BAM Nuttall has picked up three awards at the inaugural
Ground Engineering Awards held in London on 6th February 2009.
BAM Ritchies' entry – Copyhold Cutting - Slope stabilisation
- won the UK project up to £1M category Award. Contractors
had to stabilise the 200m long Copyhold Cutting on the London
to Brighton railway line to reduce the risk of landslips.
BAM Nuttall regraded the top, highly weathered, section removing,
6000t of spoil using long-reach excavators, reducing the slope
angle from 50° to 30°. The contractor also installed
raking anchors, micropiles, soil nails and face and toe anchors
using excavator-mounted and rope-supported drill rigs. What
the judges said: This solution incorporated a variety of innovative
and well considered design and construction features. In particular,
the project involved successful management of the health,
safety and environmental issues."
Nuttall John Martin's entry – Thrandeston Bog Embankment
stabilisation - won the UK project over £1M category
Award. The railway line across Thrandeston Bog on the London
to Norwich line had suffered repeated slope failures. Mott
MacDonald and RD Geotech came up with a solution involving
dry soil mixing of the peat and soft clay. This is thought
to be the first use of the technique on a UK transport project
and was 50% cheaper than the alternative piled solution. Work
was planned two years in advance so it could be carried out
ahead of five 52-hour possessions booked for the replacement
of 10 overhead line structures. What the judges said: "A
purely geotechnical project with a novel geotechnical solution
that was sustainable and sensitive to its location. Having
to plan two years in advance meant the engineers had to have
a strong conviction that their decision to use dry soil mixing
for the first time on a live railway would be successful.
The method also incorporated well thought out health and safety
measures."
Copyhold Cutting – Slope stabilisation - won the Health
and Safety Award.
Copyhold Cutting on the London to Brighton rail line had to
be stabilised after a series of landslips. It is over 200m
long and up to 30m high and excavated through Lower Grinstead
Clay. The top highly weathered section had to be regraded
and raking anchors and micro-piles, soil nails and face and
toe anchors installed. The project experienced 11 accident
and incident-free months and there were no rail or interface-related
incidents. Safety measures included, installing a 250m long
midslope barrier to stop debris falling on live track. Cameras
were also fitted to excavators to send live images to operators
and long-reach excavators were used during soil nailing instead
of slope drilling rigs. What the judges said: "This wasn't
just minimising health and safety risks, it was getting rid
of it — real solutions to real health and safety problems."
BAM Ritchies were also Highly Commended in the Technical
Excellence Award for the Dounreay Shaft Isolation project.
Congratulations to all the teams for this unmatched success.
Further Info
Peter Bishop - Head of Public Relations & Corporate Communication
BAM Nuttall Limited
St James House, Knoll Road, Camberley,
Surrey GU15 3XW
Tel: 01276 63484
Fax: 01276 66060
peter.bishop@bamnuttall.co.uk
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