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Tunnel hitch on Jubilee Line
00:00 25 May 1995
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Jubilee Line contractor McAlpine-Wayss & Freytag-Bachy is to
carry out modifications to the sealing system around the bearings
at the head of its two tunnelling machines.
Some deterioration has been discovered during an examination of the machines prior to beginning their excavation under the River Thames. The machines - named Sharon and Tracey - have completed drives on contract 107 from North Greenwich to Canning Town and have since advanced under the Blackwall Tunnel and towards the river for a second time.
'Further investigations are under way but the contractor anticipates being able to start the river crossings shortly,' said a Jubilee Line spokeswoman. 'As the tunnelling is some weeks ahead of its required programme, any delays can be accommodated in the overall programme. The project team endorses this precautionary examination before the TBMs enter the Thanet Sands area.'
Some deterioration has been discovered during an examination of the machines prior to beginning their excavation under the River Thames. The machines - named Sharon and Tracey - have completed drives on contract 107 from North Greenwich to Canning Town and have since advanced under the Blackwall Tunnel and towards the river for a second time.
'Further investigations are under way but the contractor anticipates being able to start the river crossings shortly,' said a Jubilee Line spokeswoman. 'As the tunnelling is some weeks ahead of its required programme, any delays can be accommodated in the overall programme. The project team endorses this precautionary examination before the TBMs enter the Thanet Sands area.'
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