The article describes a partial face tunnelling machine developed by the Buchan Division of Leonard Fairclough for use on tunnels from 1.8-5.3m internal diameter, in hard and soft ground with strengths up to 70mn/sq.m. The tunnelling system is intended to drive horseshoe or circular shape tunnels with or without a shield, and is capable of being stripped down into components able to pass through a 1.2 X 0.9m air lock doorway. Field trials are described in which the machine was used to drive a 1.8m internal diameter sewer tunnel through a water bearing marl with a compressive strength of 15-20mn/sq.m. Due to space limitations "smoothvent" dowelled and bolted concrete ring segments were used for the tunnel lining. Further trials are to be carried out using the machine on a variety of tunnel sizes and ground conditions. /TRRL/

  • Availability:
  • Corporate Authors:

    Morgan-Grampian Limited

    30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Leeney, J G
  • Publication Date: 1974-11

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 20-23
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00125101
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Nov 18 1975 12:00AM