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- Larsson, Hans, et al.
(författare)
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Bolt action in jointed rock
- 1984
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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
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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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