Georgios Anagnostou


Last Name

Anagnostou

First Name

Georgios

ORCID

0000-0001-9172-655X

Organisational unit

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Publications 1 - 10 of 387
  • Computational Models for Tunnel Design
    Item type: Conference Paper
    Cantieni, Linard; Anagnostou, Georgios (2025)
  • Design of emplacement tunnels and caverns
    Item type: Conference Paper
    Nordas, Alexandros; Anagnostou, Georgios (2025)
    Mitteilungen der Geotechnik Schweiz
  • Tunnel face stability and tunnelling induced settlements under transient conditions
    Item type: Monograph
    Anagnostou, Georgios; Schuerch, Roberto; Perazzelli, Paolo; et al. (2016)
    Eidgenössisches Departement für Umwelt, Verkehr, Energie und Kommunikation UVEK, Bundesamt für Strassen
  • Ein Beitrag zur Statik der Ortsbrust beim Hydroschildvortrieb
    Item type: Conference Paper
    Anagnostou, Georgios; Kovári, Kalman (1992)
  • Face stability in slurry and EPB shield tunnelling
    Item type: Journal Article
    Anagnostou, Georgios; Kovári, Kalman (1996)
    Tunnels & Tunnelling
  • Urban tunnelling in water bearing ground – Common problems and soil-mechanical analysis methods
    Item type: Conference Paper
    Anagnostou, Georgios (2002)
    Planning and engineering for the cities of tomorrow: proceedings of the Second International Conference on Soil Structure Interaction in Urban Civil Engineering
  • Creep Versus Consolidation in Tunnelling through Squeezing Ground-Part B: Transferability of Experience
    Item type: Journal Article
    Nordas, Alexandros; Leone, Thomas; Anagnostou, Georgios (2024)
    Rock Mechanics and Rock Engineering
    This paper investigates potential differences between creep and consolidation in mechanised tunnelling through squeezing ground, placing focus on the practical question of using experiences gained from existing tunnels about the required thrust force as a reference for tunnels of different diameter or adjacent tunnels. The investigations focus on two aspects. First, the effect of the tunnel diameter on the risk of shield jamming is examined. The paper demonstrates that larger-diameter tunnels are more favourable in poor-quality ground, while the opposite holds in better-quality ground, as well as in the case of pronouncedly time-dependent ground behaviour due to consolidation or creep. Second, the effect of a tunnel on the required thrust force in a neighbouring tunnel built later is examined. The paper shows that this interaction effect is particularly important in water-bearing ground of low permeability, where the drainage action of the first tunnel induces pore pressure relief and ground consolidation in an extensive area, leading to a remarkable reduction of the thrust force in the second tunnel. Conversely, in the case of creep the interaction is negligible even under extremely squeezing conditions, due to the fundamentally different nature of the purely mechanical rheological processes from coupled hydromechanical processes. The presented investigations into the transferability of experiences are valuable for tunnelling practice, in cases of twin tunnels as well as in situations where a smaller-diameter tunnel is constructed prior to the main tunnel (e.g. a pilot tunnel for exploration, advance drainage or ground improvement), or also the opposite (e.g. upgrade of a road tunnel by later construction of a safety tunnel with a smaller diameter).
  • Design issues for compressed air energy storage in sealed underground cavities
    Item type: Journal Article
    Perazzelli, Paolo; Anagnostou, Georgios (2016)
    Journal of Rock Mechanics and Geotechnical Engineering
    Compressed air energy storage (CAES) systems represent a new technology for storing very large amount of energy. A peculiarity of the systems is that gas must be stored under a high pressure (p = 10–30 MPa). A lined rock cavern (LRC) in the form of a tunnel or shaft can be used within this pressure range. The rock mass surrounding the opening resists the internal pressure and the lining ensures gas tightness. The present paper investigates the key aspects of technical feasibility of shallow LRC tunnels or shafts under a wide range of geotechnical conditions. Results show that the safety with respect to uplift failure of the rock mass is a necessary but not a sufficient condition for assessing feasibility. The deformation of the rock mass should also be kept sufficiently small to preserve the integrity of the lining and, especially, its tightness. If the rock is not sufficiently stiff, buckling or fatigue failure of the steel lining becomes more decisive when evaluating the feasible operating air pressure. The design of the concrete plug that seals the compressed air stored in the container is another demanding task. Numerical analyses indicate that in most cases, the stability of the rock mass under the plug loading is not a decisive factor for plug design.
  • A limit equilibrium method for the assessment of the tunnel face stability taking into account seepage forces
    Item type: Conference Paper
    Perazzelli, Paolo; Leone, Thomas; Anagnostou, Georgios (2013)
    Underground. The Way to the Future: Proceedings of the World Tunnel Congress, Geneva, Switzerland, May 31-June 7, 2013
Publications 1 - 10 of 387