SCALE EFFECTS IN ROCK MECHANICS . PROCEEDINGS OF THE FIRST INTERNATIONAL WORKSHOP ON SCALE EFFECTS IN ROCK MASSES, LOEN, NORWAY, JUNE 7-8 1990

Rock masses are basically inhomogeneous and discontinuous media. The determination of rock, joint and rock mass properties always involve uncertainties, due to the variability of the rock material and the fracture network. The results of the laboratory and in situ tests are thus affected by both the chosen testing points and the volumes involved in the tests. The variation of the test results with the specimen size is called Scale Effect. The paper tries to get a general overview on the scale effects associated with the determination of deformability, strength, hydraulic properties and internal stresses in rock masses. An attempt to establish a worldwide accepted definition of Scale Effect is made, the concept of Representative Elementary Volume is discussed, and the variation and scattering of rock, joint and rock mass properties with the sample size are analysed. Attention is also drawn on factors that have influence on the results of the measurements, like sampling bias and the different techniques used.(A) For the covering abstract of the conference see IRRD 832552. (Author/TRRL)

  • Availability:
  • Corporate Authors:

    AA Balkema

    P.O. Box 1675
    Rotterdam,   Netherlands  BR-3000
  • Authors:
    • Cunha, A P
  • Publication Date: 1990

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00609524
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 90-6191-660-7
  • Files: ITRD, TRIS
  • Created Date: Jun 30 1991 12:00AM