Squeezing Rock

Ehrbar, H.; TAVETSCH INTERMEDIATE MASSIF NORTH: PROOF THE FEASIBILITY, Tunnelling the Gotthard; Swiss Tunnelling Society, 2016

Ehrbar, H.; Sostenimientos deformables para t neles excavados a gran profundidad y sujetos a grandes presiones; Mexico D.F., 2014
Kovári, K., Ehrbar, H.; The squeezing rock zones in the TZM North – Design and realization, conference volume Swiss Tunnel Congress 2008, sia Documentation 0229

Ehrbar, H.; Gotthard Base Tunnel, Sedrun section: Mastering squeezing rock zones, World Tunnel Congress , Istanbul 2005

Ehrbar, H., Schoch Keller, S.; Geological risks and mitigation measures using the example of the Sedrun subsection; Geology AlpTransit (GEAT), Zurich 2005

Ehrbar, H.; AlpTransit Gotthard, section Sedrun tunnelling concept in the squeezing rock zones – from design to construction; EUROCK 2004 & 53rd Geomechanics Colloquium, Salzburg 2004

Ehrbar, H.; Gotthard Base Tunnel – Sedrun section, coping with squeezing rock zones, AlpTransit conference, Swiss tunnelling Society, Interlaken, 2004

Ehrbar, H..; Concepts for initial rock support in squeezing rock, taking the example of the Gotthard Base Tunnel, IUT ’02, Sargans, 2002

Kovéri, K., Amberg, F., Ehrbar, H.; Mastering of Squeezing Rock in the Gotthard Base; World Tunnelling (1999)

Kovari, K., Amberg, F., Ehrbar, H.; Tunnelling in squeezing rock – a challenge for the new Alpine transversals; Bochum, 1999

Ehrbar, H., Pfenninger, I.; Implementation of geology in technical measures in the Tavetsch Intermediate Massif North; Geology AlpTransit (GEAT), Zurich 1999