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Träfflista för sökning "WFRF:(Olofsson Thomas) srt2:(1980-1984)"

Sökning: WFRF:(Olofsson Thomas) > (1980-1984)

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  • Larsson, Hans, et al. (författare)
  • Bolt action in jointed rock
  • 1984
  • Ingår i: Rock bolting : theory and application in mining and underground construction. - Rotterdam : Balkema Publishers, A.A. / Taylor & Francis The Netherlands. - 9061915147 ; , s. 33-46
  • Konferensbidrag (refereegranskat)abstract
    • A constitutive elasto-viscoplastic model is presented which combines the properties of the jointed rock mass and the rock bolt system. Different mechanisms of single joint-bolt systems are analyzed. Mechanisms like axial straining, tension-stiffening (due to bonding between grouted bolts and rock) and dowel action are included in the model. Stiffness properties are derived from pull-out tests on single bolts. The various stiffnesses and compliances from multi-directional joint sets and bolt sets are superimposed with intact rock properties in a model of the rock mass.
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  • Swan, Graham, et al. (författare)
  • A multi-purpose rock core testing device
  • 1983
  • Ingår i: ASTM geotechnical testing journal. - 0149-6115 .- 1945-7545. ; 6:1, s. 18-23
  • Tidskriftsartikel (refereegranskat)abstract
    • The need for a multi-purpose rock tester that incorporates a microcomputer for logging and evaluation purposes is identified. A number of semistandard test methods adaptable to such a tester are examined and found suitable from the point of view of simplicity, cheapness, and accuracy of determination. Some design aspects of this tester in its present state of development are considered
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