Dia 1:Ativando obras no parque olímpico,Jan Hellings, Jan Hellings & Associates Ltd_UK

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

Olympic Delivery Authority

2

SUMMARY OF PRESENTATION

• 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


3

LOCATION OF 2012 OLYMPIC VENUES


4

OLYMPIC PARK SITE - BEFORE


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


6

PLANNING PERMISSIONS


7

SITE PLAN


8

Site Investigation Statistics

No. of IntrusionsTotal metres sampled

and tested

Geotech and contam

boreholes880 30,800

Contam specific

boreholes390 5,850

Window samples

(contam specific)930 5,580

Trial pits (geotech

and contam)600 2,400

TOTALS 2,800 44,630


9

Plan of Olympic Park

Site Investigation


10

Handover to Venue Contractor

Mechanical Separation

Site Investigation

Demolition

Remediation

Bulk Earthworks

Approvals

Vacant Possession

Global Remediation Strategy

Site Specific Remediation Strategy

Remediation Method Statements (RMS)

Stabilisation

Bioremediation

Soil Washing Target

= 85%

re-use

Site Preparation Life Cycle

River Walls

Utility inputs

Invasive Species

Construction Roads and

Bridges (abutments)

Target

= 95%

re-use


Conceptual Site Model – Risk Driven Remediation

11


12


13

Treatment Methods

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

Soil Washing Sout); looking at sludge

(fines at 15 tph *2) dewatering filter press

Soil Washing North Plant (100 tph) CZ 5b;

looking east the fine sands hydraulic separation

and output conveyor in foreground


14

Aerial view of site prior to start of project

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

Soil Stabilisation Plant in South

Treatment Centre (60t/hr)

Bioremediation Pile Cells being filed prior to

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

Unsorted Landfill Materials at Complex

Screening Plant


16

• 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

Treatment Centre Locations


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)

• Beneficial and optimal reuse strategies

•General fill (approximately 50% untreated)

•Separation layer (approximately 50%)

•Base coarse and sub-base

•Selected engineering fill


18

Materials Balance – Enabling Works

Sludge

Washed

Sands

Waste

Washed

Gravels


19

Demolition of Tower

Blocks on CZ6b, Clays

Lane


20

Demolition of warehouse/office building


21

Oblique photo looking North


22

STADIUM SITE MID 2007


23

OLYMPIC PARK LOOKING NORTH – JULY 2008


24

OLYMPIC PARK LOOKING NORTH – AUGUST 2008


25

OLYMPIC PARK LOOKING NORTH – NOVEMBER 2008


26

OLYMPIC PARK LOOKING NORTH – MID 2009


27

PARK VIEW LOOKING SOUTH – MID 2008


28

PARK VIEW LOOKING SOUTH – November 2008


29

PARK VIEW LOOKING SOUTH – MID 2009


30

AQUATICS SITE – MID 2008


31

AQUATICS SITE – MID 2009


32

AQUATICS ROOF – NOV 2009


LOOKING SOUTH – DEC 2011

33


34

PARK – GAMES MODE


35

AQUATICS COMPLEX


36

VILLAGE - LEGACY


37

MAIN STADIUM


THE QUEEN LEAVES BUCKINGHAM PALACE WITH

JAMES BOND FOR THE OPENING CEREMONY

38


THE QUEEN PARACHUTES INTO THE STADUIM –

OPENING CEREMONY

39

OPENING CEREMONY


41


42

THE LEGACY FRAMEWORK FOR THE PARK

• 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


43


44

CLOSURE

The 2012 London Olympic and Paralympic Games

were a great success. We engineers can do the

‘impossible’!

Muito obrigado

[email protected]

Date post:	16-Jan-2015
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Dia 1:Ativando obras no parque olímpico,Jan Hellings, Jan Hellings & Associates Ltd_UK

Technology