Interaction and multiscale mechanics

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Modeling large underground structures in rock formations

  • e Sousa, Luis Ribeiro (University of Porto, Faculty of Engineering, Department of Civil Engineering) ;
  • Miranda, Tiago (University of Minho, Department of Civil Engineering, School of Engineering)
  • Received : 2010.11.17
  • Accepted : 2011.02.08
  • Published : 2011.03.25
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Abstract

A methodology for jointed rock mass characterization starts with a research based on geological data and tests in order to define the geotechnical models used to support the decision about location, orientation and shape of cavities. Afterwards a more detailed characterization of the rock mass is performed allowing the update of the geomechanical parameters defined in the previous stage. The observed results can be also used to re-evaluate the geotechnical model using inverse methodologies. Cases of large underground structures modeling are presented. The first case concerns the modeling of cavities in volcanic formations. Then, an application to a large station from the Metro do Porto project developed in heterogeneous granite formations is also presented. Finally, the last case concerns the modeling of large cavities for a hydroelectric powerhouse complex. The finite element method and finite difference method software used is acquired from Rocscience and ITASCA, respectively.

Keywords

References

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