DEFORMATIONS AT THE FACE OF THE HEADING AND DETERMINATION OF THE COHESION OF THE ROCK MASS

This paper deals with rock behaviour at the face of the heading, and the determination of the in situ rock-mass cohesion. The three dimensional character of the stresses and deformations around the face of the heading are simulated by using a hypothesis of spherical symmetry. This enables the characteristic curves for the face to be determined analogously to those of the tunnel behind the face, taking into account progressive or brittle rupture, partial or total loss of cohesion at fracture, and dilatation or deformation at constant volume. The proposed method also serves to define the stability of the face and along the tunnel, as a function of the post-failure of the rock. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03620565
• Corporate Authors:

  Pergamon Press, Incorporated

  Headington Hill Hall
  Oxford OX30BW,    
• Authors:
  • EGGER, P
• Publication Date: 1980-3-4

Media Info

• Features: Figures; References;
• Pagination: p. 313-318
• Serial:
  • Underground Space
  • Volume: 4
  • Issue Number: 5
  • Publisher: Pergamon Press, Incorporated
  • ISSN: 0362-0565

Subject/Index Terms

• TRT Terms: Cohesion; Compasses; Deformation; Excavation; Excavation and tunneling; Excavations; Face; Failure; Field tests; Fracture mechanics; Mass; Mathematical models; Navigation; Rock excavation; Rocks; Stability (Mechanics); Strength of materials; Stresses; Tunnels
• Uncontrolled Terms: Heading; Rock mass
• Geographic Terms: Netherlands
• Old TRIS Terms: Determination; Insitu methods
• ITRD Terms: 5903: Cohesion; 5595: Deformation; 5155: Excavation (process); 5520: Failure; 4154: Rock; 5544: Strength (mater); 5575: Stress (in material); 3374: Tunnel
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; I43: Rock Mechanics; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00319239
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Feb 6 1996 12:00AM