Dia 1:Ativando obras no parque olímpico,Jan Hellings, Jan Hellings & Associates Ltd_UK
1. Enabling works at the Olympic Park:
Effectively delivering the preparation of
the construction site for the London 2012
games
Dr Jan Hellings
Dr Jan Hellings & Associates Ltd
Formerly Project Sponsor Olympic Delivery Authority
London
October 1st 2013
2. SUMMARY OF PRESENTATION
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Taking possession of the Olympic Park site
Site investigation
Ground/water considerations
Clean-up (Remediation) process
Typical contaminants
Treatment options
Materials movement & management
Photos
Lessons learned
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Olympic Delivery Authority
5. TAKING POSSESSION OF THE OLYMPIC PARK SITE
• The assembly of a 250 hectare site is one of largest
Compulsory Purchase Orders to have taken place in the UK.
• 2,200 land ownerships to acquire
• Approximately 200 businesses relocated
• 98% of the 4,750 jobs secured
• Over 140,000 square metres of development space,
including three new LDA business parks constructed in
areas adjacent to the Park
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Olympic Delivery Authority
13. Treatment Methods
Soil Washing North Plant (100 tph) CZ 5b;
looking east the fine sands hydraulic separation
and output conveyor in foreground
Soil Washing Sout); looking at sludge
(fines at 15 tph *2) dewatering filter press
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Olympic Delivery Authority
Soil Washing North Plant (100 tph) CZ 5b;
looking north to fines separation and beyond to
Coarse fraction washing.
Soil Washing South (75 tph *3); looking north
towards the two soil washing plants in cZ4.
Note washed gravel output in left foreground
14. Treatment Methods
Mobile Soil Stabilisation Plant set up for
Treatment Trials (45t/hr) prior to Main
Equipment being Mobilised
Bioremediation Pile Cells Aeration, Leachate and irrigation
pipe systems being established beneath bio-piles
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Olympic Delivery Authority
Aerial view of site prior to start of projectfiled prior to
Bioremediation Pile Cells being
Soil Stabilisation Plant in South
Treatment Centre (60t/hr)
Aeration, Leachate and irrigation systems being
established, pipe work still to be connected
15. Treatment Methods
Complex Screening Plant setup in North
of the Park
In-situ Soil Mixer utilising Cement and/or lime to
allow geotechnical soil parameter improvement
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Olympic Delivery Authority
Unsorted Landfill Materials at Complex
Screening Plant
16. Treatment Centre Locations
• Two treatment centres
established – one in the north
and one in the south
• Each treatment centre has
several treatment processes
available
• Flexibility of approach and
competition between treatment
methods is encouraged
• Five soil washing plants at
site.
• Soil stabilisation
• Bioremediation cell pads
constructed
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Olympic Delivery Authority
17. • Materials Total approximately (2.5 Million m3)
• Demolition (500,000m3)
• Excavated Soil
(1.8 Million m3 cut of which 820,000m3 treated )
• Tunnelling soil (approximately 200,000m3)
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• Beneficial and optimal reuse strategies
• General fill (approximately 50% untreated)
• Separation layer (approximately 50%)
•Base coarse and sub-base
•Selected engineering fill
Olympic Delivery Authority
42. THE LEGACY FRAMEWORK FOR THE PARK
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Olympic Delivery Authority
110 ha open space
Development platforms
comprising > circa 950,000 sqm
development
4,000 new housing units within
the village (> 9,000 overall)
Major investments in waterways,
rims, park edges
Venues transformed for legacy
Provides strong basis for further
development
44. CLOSURE
The 2012 London Olympic and Paralympic Games
were a great success. We engineers can do the
‘impossible’!
Muito obrigado
jan@janhellings.com
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Olympic Delivery Authority