SHOTCRETE SUPPORT DESIGN IN BLOCKY GROUND: TOWARDS A DETERMINISTIC APPROACH

The precise mechanisms by which shotcrete acts to stabilize the ground around a tunnel are not well understood and are the focus of ongoing research and discussion. Consequently design of shotcrete support is still more of an art than a science, with the majority of designs based on past experiences in similar settings, on empirical recommendations or on monitoring and modification during construction. In an attempt to provide an analytical alternative, and to gain some insight concerning the mechanisms which control shotcrete failure in blocky ground, four deterministic design models are presented which illustrate shotcrete's effectiveness at supporting structurally defined blocks and wedges, thereby avoiding progressive loosening and destabilization of the rock mass around an opening. These models may also be used to verify or refine design recommendations which have been based initially on empirical guidelines, and to give an indication of the approximate factor of safety. Examples of typical design charts are given. Results from the models are presented.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08867798
• Corporate Authors:

  Elsevier

  The Boulevard, Langford Lane
  Kidlington, Oxford  United Kingdom  OX5 1GB
• Authors:
  • Barrett, SVL
  • MCCREATH, D R
• Publication Date: 1995-1

Language

• English

Media Info

• Features: References;
• Pagination: p. 79-89
• Serial:
  • Tunnelling and Underground Space Technology
  • Volume: 10
  • Issue Number: 1
  • Publisher: Elsevier
  • ISSN: 0886-7798
  • Serial URL: https://www.sciencedirect.com/journal/tunnelling-and-underground-space-technology

Subject/Index Terms

• TRT Terms: Design; Rock mechanics; Shotcrete; Tunnel lining; Tunnel supports
• Uncontrolled Terms: Support (Tunnel)
• ITRD Terms: 9011: Design (overall design); 5757: Rock mechanics; 4730: Shotcrete; 3605: Timbering; 3385: Tunnel lining
• Subject Areas: Design;

Filing Info

• Accession Number: 00677426
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: May 25 1995 12:00AM