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Im Artikel sind die Ergebnisse von In‐situ‐Spannungsanalysen im Bereich von drei Erkundungsbohrungen des Brenner Basistunnels vorgestellt. Diese basieren auf den direkten Bestimmungen des kompletten 3D‐Gebirgsspannungszustands mit Racos (Rock anisotropy characterisation on rock samples) und der minimalen Spannungskomponente mit hydraulischen Fracs sowie ergänzenden analytischen und numerischen Berechnungen...
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