DETERMINING THE ELASTIC MODULUS OF A ROCK MASS BY MEASURING THE DEFORMATIONS PRODUCED BY CONCENTRATED LOADS IN AN EXPERIMENTAL TUNNEL

Within the sphere of technical problems associated with the design of large civil engineering works that involve large areas of rock or earth masses (foundations for dams or large buildings, tunnel excavations, etc.), it is becoming increasingly urgent to find more accurate ways of establishing the parameters that relate to geomechanical characteristics. The problem of determining the elastic modulus of a rock mass by means of in-situ tests is examined. To this end an exact theoretical interpretaton of the jack loading test in an experimental tunnel of circular cross-section is presented. The interpretation relies upon experimental determinations on fleximetric specimens taken from the tunnel generatrices under load. Additional considerations are given on the applicability and approximation of the method, with reference to specific examples.

• Supplemental Notes:
  • Translated from Energia Elettrica (Edizioni CESI, Italy).
• Corporate Authors:

  National Technical Information Service

  5301 Shawnee Road
  Alexandria, VA  United States  22312
• Authors:
  • Goffi, L
• Publication Date: 1963

Media Info

• Pagination: 18 p.

Subject/Index Terms

• TRT Terms: Building; Dams; Deformation; Excavation and tunneling; Field tests; Foundations; Geological events; Geophysics; Load tests; Loads; Mass; Measuring methods; Mechanical elasticity; Moisture content; Physical properties; Rocks; Strength of materials; Structural design; Tunnels
• Uncontrolled Terms: Rock mass; Tunnel design
• Old TRIS Terms: Geological conditions; Insitu methods; Rock properties; Rock strength
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways;

Filing Info

• Accession Number: 00136565
• Record Type: Publication
• Source Agency: National Technical Information Service
• Files: TRIS
• Created Date: Jul 13 1976 12:00AM