Tunnel boring excavation has come a long way in the last three decades, venturing into areas where the rock is hard, highly fractured, susceptible to water inflows or where mixed face conditions occur. Alongside this development, the excavation of inclines and declines by TBMs has also become possible. While the earliest such project was undertaken by a Jarva machine in 1967, it is Wirth's TBMs which are credited with having driven the greatest number of non-horizontal bored tunnels.

  • Availability:
  • Corporate Authors:

    Morgan-Grampian (Construction Press) Limited

    Morgan-Grampian House, 30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • TARKOY, P J
  • Publication Date: 1991-12

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 51-55
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00619572
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 29 1992 12:00AM