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Influence of geometrical and operational machine characteristics on ground movements during EPB tunnelling

  • Dimitris Litsas
  • , Panagiotis Sitarenios
  • , Michael Kavvadas
    • National Technical University of Athens

    Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

    Abstract

    This paper studies numerically the influence of different: a) steering gap openings; b) tail grouting pressures and; c) steering gap pressure gradients, on surface settlements induced during EPB tunnelling. The numerical study is performed with an advanced 3D finite element model in the Simulia Abaqus program, which provides detailed and realistic simulation of EPB tunnelling. The results reveal a significant effect of the size of the steering gap and its filling conditions (empty, full, partially filled with process liquids), while subsequent tail grouting proves to be incapable to reverse the adverse effects in ground surface settlement caused by various volume loss sources.
    Original languageEnglish
    Title of host publication EURO:TUN 2017 : computational methods in tunneling and subsurface engineering : proceedings of the Fourth International Conference on Computational Methods in Tunneling and Subsurface Engineering, Innsbruck University, Austria, April 18-20, 2017
    Place of PublicationInnsbruck, Austria
    PublisherUniversität Innsbruck
    Pages143-150
    Number of pages8
    Volume1
    ISBN (Print)9783903030350
    Publication statusPublished - Apr 2017
    EventIV International Conference on Computational Methods in Tunneling and Subsurface Engineering - Innsbruck, Austria
    Duration: 18 Apr 2017 → 20 Apr 2017
    Conference number: 4

    Conference

    ConferenceIV International Conference on Computational Methods in Tunneling and Subsurface Engineering
    Abbreviated titleEURO:TUN 2017
    Country/TerritoryAustria
    CityInnsbruck
    Period18/04/17 → 20/04/17

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