Compatibility of the support system consisting of yielding elements and shotcrete lining in highly faulted grounds

Tina Marolt, Jakob Likar

Research output: Contribution to journalArticle

Abstract

The design procedure is made for a mine shaft where permanent underground facilities are interconnected. The highlyfaulted grounds were identified using empirical and semi-empirical theories. Furthermore, the behavior types are presented. This paper presents excavation and support methods in such ground conditions and the calculations results show that the installation of the yielding elements have an effect on support elements and prevent shotcrete damage during the curing stage. Different numerical analyses carriedout showed that, with the yielding elements installed, the total displacements increase but the final axial force reduces, and therefore,the characteristic compressive strength of shotcrete is not exceeded. The calculation results of ground loads and displacements on thedesigned support system are presented with a 3D numerical geo-mechanical model adopted for highly faulted ground surroundingdeeper complex underground structures.
Original languageEnglish
Pages (from-to)1457-1466
Number of pages10
JournalJournal of Civil Engineering and Architecture
Volume8
Issue number11
Publication statusPublished - Nov 2014

Keywords

  • faulted ground
  • yielding elements
  • mine shaft
  • 3D numerical model
  • ground reaction curve

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