This article describes the use of pipejacking as an alternative to open cut in the construction of the tunnel for the North quay sewer in the isle of dogs, London. Pipejacking was chosen, because of the strict limits on ground settlement and vibration that were imposed in this area, and because of the loose ground conditions, with silty sand and sandy clays overlying river terrace deposits. This technique, combined with a double shift system of working, allowed exceptionally rapid completion of the tunnelling. It was fortunate that this method was used, because a 500 lb (270 kg) unexploded world war 2 bomb was found in the path of the third of the four pipejacks. It was made safe by an army bomb disposal unit, after a fast and intelligent response by the men at the face who, fortunately, were working by hand. (TRRL)

  • Availability:
  • Corporate Authors:

    Mining Journal Limited

    60 Worship Street
    London EC2A 2HD,   England 
  • Authors:
    • Smith, M
  • Publication Date: 1989-2


  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00499173
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1990 12:00AM