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Abstract
Modelling of underground structures requires the determination of ground parameters. This en-
tails a plethora of uncertainties in mechanical and spatial aspects. In most cases the parameters have to be adjusted to the different scale between laboratory samples and real dimensions. As direct modelling of all features of complex rock masses commonly is not possible due to the limitations of the calculation method, the ground model often is simplified. The simplification ranges from simply increasing the block size to completely “homogenizing” the rock mass by “smearing” the discontinuities into a continuum. Various simple
“upscaling” methods or empirical procedures are used to arrive at the properties of the rock mass. This paper critically reviews the procedures used in upscaling and modelling practise and examines the effects of simplification with the help of numerical simulations. Five reference cases will be calculated taking different classification systems into account, with the intent of showing the variation in results.
tails a plethora of uncertainties in mechanical and spatial aspects. In most cases the parameters have to be adjusted to the different scale between laboratory samples and real dimensions. As direct modelling of all features of complex rock masses commonly is not possible due to the limitations of the calculation method, the ground model often is simplified. The simplification ranges from simply increasing the block size to completely “homogenizing” the rock mass by “smearing” the discontinuities into a continuum. Various simple
“upscaling” methods or empirical procedures are used to arrive at the properties of the rock mass. This paper critically reviews the procedures used in upscaling and modelling practise and examines the effects of simplification with the help of numerical simulations. Five reference cases will be calculated taking different classification systems into account, with the intent of showing the variation in results.
| Original language | English |
|---|---|
| Title of host publication | Transport and city tunnels |
| Subtitle of host publication | proceedings of the 11th International Conference Underground Constructions, Prague 2010 ; Prague, 14th - 16th June 2010 |
| Place of Publication | Prag |
| Publisher | Czech Tunneling Association ITA-AITES |
| Pages | 765-770 |
| ISBN (Print) | 978-80-254-7054-1 |
| Publication status | Published - 2010 |
| Event | 11th International Conference Underground Constructions - Prag, Czech Republic Duration: 14 Jun 2010 → 16 Jun 2010 |
Conference
| Conference | 11th International Conference Underground Constructions |
|---|---|
| Country/Territory | Czech Republic |
| City | Prag |
| Period | 14/06/10 → 16/06/10 |
Fields of Expertise
- Sonstiges
Treatment code (Nähere Zuordnung)
- Theoretical
Fingerprint
Dive into the research topics of 'Review of current rock mass characterization practices'. Together they form a unique fingerprint.Projects
- 1 Finished
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Modelling of Rock Mass Behaviour
Radoncic, N. (Co-Investigator (CoI)), Pilgerstorfer, T. (Co-Investigator (CoI)), Schubert, W. (Principal Investigator (PI)) & Seidl, C. (Co-Investigator (CoI))
1/12/92 → 31/12/23
Project: Research project