Work on the London Underground Jubilee Line extension, near some of the most sensitive buildings in the capital, is being resumed following a three month suspension of the NATM work following a collapse at Heathrow. Modifications connected with the compensation grouting programme have been introduced. Details are given of the design and construction of the excavations. Two new Underground stations are being constructed on the 2.2km long contract where all the muck can be hauled out and deposited on a conveyor to a barge on the River Thames, avoiding the need to transport it through London's congested streets. Rotary backhoe shielded machines have been used on some of the running tunnels which will connect with existing tunnels by means of a step plate junction. A major ground treatment programme has begun in one area to deal with the terrace gravels and London clay.

  • Availability:
  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • WAY, A
  • Publication Date: 1995-9


  • English

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Filing Info

  • Accession Number: 00715941
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jan 31 1996 12:00AM