Contractors World

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Contractors World UK & Ireland
2012 Vol 2 No 6   
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Update on CrossRail Progress - continued

Over 12,000 segments have now been produced at the Old Oak Common concrete segment plant for the western tunnels.“Once Ada has made sufficient progress, Phyllis will move forward through the Paddington station box onwards to Bond Street, Tottenham Court Road and then Farringdon. The tunnels between Royal Oak and Farringdon will be completed in late 2013.”

Over 12,000 segments have now been produced at the Old Oak Common concrete segment plant for the western tunnels. A total of 3,680 segments have been used to construct the 460 tunnel rings in the western tunnels to-date.

Work to install the major conveyor system behind the TBMs will complete once Ada is fully below ground. A total of 24 kilometres of conveyer belt will be used to remove excavated material from the western tunnels.

Rail sidings have been constructed to allow freight trains operated by GB Railfreight to access Westbourne Park to transport the excavated material to Northfleet, Kent from where it will be shipped to Wallasea Island in Essex to create a RSPB nature reserve. A total of 66,000 tonnes of excavated material has been transported to Northfleet so far.

Two kilometres of 900 mm narrow gauge tunnel railway has been also laid from Westbourne Park to enable tunnel locomotives to transport materials and supplies into and out of the tunnel.  Five 32 tonne Schoma tunnel locomotives will be used to construct the western tunnels. Two tunnel locomotives are currently on site.

Eight tunnel boring machines will be used to construct 21 kilometres (13 miles) of Crossrail’s twin bore tunnels running between Royal Oak in west London and Pudding Mill Lane and Plumstead in east London.

A further two tunnel boring machines, Elizabeth and Victoria, are currently being assembled at Limmo Peninsula beside Canning Town station, for the eastern tunnels between Docklands and Farringdon. Tunnelling is due to commence at Limmo Peninsula this winter.

A fifth TBM, Sophia has recently completed factory testing. Early next year Sophia will begin constructing the 2.6 km Thames Tunnel between Plumstead and North Woolwich.

Marubeni-Komatsu Ltd, the sole UK distributor of Komatsu heavy machinery, has supplied five Komatsu HB215LC-1 hybrid excavatorsShowing ‘Green Credentials with Hybrid excavator

CrossRail has consistently shown its awareness and responsibility to minimise environmental impact from the major work that is going on across London. It also shows its commitment to working with archaeologists in providing time for proper investigations as ‘new finds’ are discovered.

The organization has just seen the first hybrid excavator to be put to work on one part of the project. This is not only a first for CrossRail but a first for the UK.

Marubeni-Komatsu Ltd, the sole UK distributor of Komatsu heavy machinery, has supplied five Komatsu HB215LC-1 hybrid excavators to Shropshire-based Ridgway Rentals. With 1,700 of these hybrids currently in action worldwide, these are the first to be sold in the UK, and offer users an enviable combination of high performance and environmentally-friendly features.

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