Am 17.06.2020 wurde der letzte Durchschlag am Koralmtunnel vom Baulos KAT3 auf das Baulos KAT2 gefeiert.
Der Vortrieb begann im Oktober 2015 und erfolgte durch eine Multi-Mode-TBM mit einem Durchmesser von rund 10m. Die ersten rund 4 Kilometer wurde die TBM im EPB-Modus betrieben und durchfuhr sedimentäre Lagen des Lavanttals und der Lavanttaler Hauptstörungszone. Anschließend wurde die TBM auf den Hartgesteinsmodus umgebaut und durchbohrte weitere rund 6 km im Kristallin bis zur Baulosgrenze KAT2.
Wir gratulieren allen Beteiligten und verbleiben mit einem herzlichen Glück auf.
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