TUNNEL EXCAVATION IN CLAYEY-MARLY FORMATIONS: THE CASE OF KALLIDROMO TUNNEL
(EN)
Bloukas, Stavros
Amerikanos, Panagiotis
Baltzois, Vassilios
Tagkas, Theodoros
Vagiotou, Eleni
Tryfonas, Georgios
Malandrakis, Eleftherios
Diasakos, Nikolaos
This paper presents the excavation of Kallidromo railway tunnel in clay and clay-marl formations. During the past years various approaches were considered both at the design and construction level, for the completion of this difficult part of the tunnel. Finally a method has been selected and successfully applied which combines the principles of yielding and double support.
(EN)