| 1. |
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| 2. |
- Borg, Torgny
(författare)
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Sensitivity aspects of FEM calculations
- 1981
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Ingår i: Application of rock mechanics to cut and fill mining. - London : The Institution of Mining and Metallurgy. - 0900488603 ; , s. 213-225
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Konferensbidrag (refereegranskat)abstract
- The different errors that are introduced during FEM calculations are presented - idealization errors, discretization errors, calculation errors and genuine mistakes. Some explicit FEM calculations to enable the study of the influence of a variation of rock mass moduli, initial stress and boundary location for an isotropic linear elastic model are presented. The results from this study have been used to establish an improved model for the later calculations in the project.
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| 3. |
- Borg, Torgny
(författare)
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The Näsliden Project : FEM modeling strategies
- 1981
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Ingår i: Application of rock mechanics to cut and fill mining. - London : The Institution of Mining and Metallurgy. - 0900488603 ; , s. 196-203
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Konferensbidrag (refereegranskat)
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| 4. |
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| 5. |
- Börgesson, Lennart
(författare)
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Mechanical properties of hydraulic backfill
- 1981
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Ingår i: Application of rock mechanics to cut and fill mining. - London : The Institution of Mining and Metallurgy. - 0900488603 ; , s. 193-203
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Konferensbidrag (refereegranskat)
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| 6. |
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| 7. |
- Leijon, Bengt, et al.
(författare)
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Stress measurements in Näsliden mine
- 1981
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Ingår i: Application of rock mechanics to cut and fill mining. - London : The Institution of Mining and Metallurgy. - 0900488603 ; , s. 162-168
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Konferensbidrag (refereegranskat)
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| 8. |
- Ludvig, Bengt
(författare)
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Direct shear tests of filled and unfilled joints
- 1981
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Ingår i: Application of rock mechanics to cut and fill mining. - London : The Institution of Mining and Metallurgy. - 0900488603 ; , s. 179-185
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Konferensbidrag (refereegranskat)
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| 9. |
- Stephansson, Ove
(författare)
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Näsliden project : rock mass investigations
- 1981
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Ingår i: Application of rock mechanics to cut and fill mining. - London : The Institution of Mining and Metallurgy. - 0900488603 ; , s. 145-161
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Konferensbidrag (refereegranskat)abstract
- A new geomechanical model is presented in which the rock mass is treated as an elastic, composite material. Here the joints are treated as weak laminae in a strong matrix of rock. Basic equations for two crossings sets of joints are presented and applied to the rock mass of the Nasliden mine. Application of the theory of transversely isotropic material with stiffness data taken from shear box experiments gives too low values of the equivalent elastic moduli of the rock mass. The geomechanical model can be used to assess the rock mass properties for input into anisotropic, elastic finite-element analysis of structures in rocks.
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| 10. |
- Swan, Graham
(författare)
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Stiffness and associated joint properties of rocks.
- 1981
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Ingår i: Application of rock mechanics to cut and fill mining. - London : The Institution of Mining and Metallurgy. - 0900488603 ; , s. 169-178
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Konferensbidrag (refereegranskat)abstract
- A model for joint normal stiffness is examined based on Hertzian contact theory. Comparison of the theory with observed stiffness values taken from singl and multiple artifically made joints in Nasliden rocks shows its applicability for low orders of normal stress
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