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WORLD RECORD A CONGRATULATIONS ON THE FINAL BREAKTHROUGH The The final final breakthrough at at the the Gotthard Base Tunnel on on March 23, 23, 2011 in in the Western tunnel and and on on October 15, 15, 2010 2010 in in the the Eastern tunnel marks the the most sig sig nificant milestone on the way way to to completing the the longest railway tunnel in in the the world. Europe salutes Switzerland’s achievement in creating this this 2 2 times 57 57 kilometer long epoch-making project to to connect northern and and southern Europe by by rail rail through the the Alps. Our thanks go go to to the client AlpTransit and and our our customers for for allowing us us to to be be part part of of this this spectacular feat and historic undertaking with with our our tunnelling technology. NORTH NORTH m above m above sea sea level level 3,000 3,000 2,000 2,000 ERSTFELD 1,000 1,000 AMSTEG Aar Aar Massif Massif 2008 2008 Tunnel Tunnel length: length: 7,148m 7,148m (1) (1) 2009 2009 2003 2003 500 500 Tunnel Tunnel length: length: 7,116m 7,116m (2) (2) ERSTFELD / / AMSTEG Intschi Intschi Zone Zone Tunnel Tunnel length: length: 10,722m (3) (3) Tunnel Tunnel length: length: 10,703m (4) (4) AMSTEG / / SEDRUN AGN AGN Consortium: STRABAG AG AG Tunnelbau Schweiz (CH) (CH) / / STRABAG AG AG (A) (A) Tavetsch Intermediate Massif SEDRUN 2006 2006 2007 Drill Drill & & blast tunnelling PREVIEW (1) Gabi (1) Gabi I, I, Herrenknecht Gripper Gripper TBM TBM S-421, S-421, 9.58m 9.58m (2) Gabi (2) Gabi II, II, Herrenknecht Gripper Gripper TBM TBM S-422, S-422, 9.58m 9.58m April April and and May May 2008: 2008: Start Start of regular of regular tunnelling. July July 19, 19, 2009: 2009: 56m 56m of new of new tunnel tunnel are are created created in just in just 24 24 hours. hours. This This is deemed is deemed to be to a be world a world record record for a for hard a hard rock rock TBM TBM of such of such dimensions. June June 16, 16, 2009 2009 and and September 16, 16, 2009: 2009: The The machines reach reach their their targets targets after after just just 18 months 18 months – 6 – months 6 months ahead ahead of of schedule. Deviation from from the ideal the ideal axis axis measures measures only only 4mm 4mm in the in the horizontal and and 8mm 8mm in in the vertical. the vertical. Top Top tunnelling performances: 56m/day, 185m/week, 711m/month. (3) (3) Gabi Gabi I, I, Herrenknecht Gripper TBM TBM S-229, 9.58m (4) (4) Gabi Gabi II, II, Herrenknecht Gripper TBM TBM S-230, 9.58m October 2003 2003 and and January 2004: Start of of regular tunnelling. 2004: 2004: The The TBMs TBMs pass pass the the Intschi fault fault zone zone more quickly than planned. June June 2005: A A mixture of of water and and fine fine material entered the the cutterhead in the in the western tube. tube. The The TBM TBM must must be be freed and and cannot restart tunnelling until until November. June June and and October 2006: The The construction site site teams successfully complete tunnelling at at the the end end of of the the lots, lots, 9 9 and/or 6 6 months ahead of of the the schedule. Top Top tunnelling performances: 40m/day, 210m/week, 688m/month.
AT THE GOTTHARD. AT THE NEW GOTTHARD BASE TUNNEL. Herrenknecht Aktiengesellschaft The Board of Management Dr.-Ing. E. h. Martin Herrenknecht Chairman of the Board of Management Main breakthrough October 15, 2010 March Breakthrough 23, 2011eastern tunnel Gotthard Massif Piora Basin Gypsiferous cap-rock (5) Sissi, Herrenknecht Gripper TBM S-210, 9.43m (6) Heidi, Herrenknecht Gripper TBM S-211, 9.43m Dipl.-Ing. (FH) Gebhard Lehmann Vice Chairman of the Board of Management 2010 Tunnel length: 11,098m 11,134m (5) 2007 2011 Tunnel length: 11,118m 11,088m (6) FAIDO / SEDRUN FAIDO 2006 Betriebswirt (VWA) Kurt Stiefel Member of the Board of Management BODIO / FAIDO Penninic Gneiss Zone Tunnel length: 13,426m (7) Tunnel length: 14,088m (8) BODIO / FAIDO TAT Consortium: Implenia Industrial Construction, Alpine Bau GmbH, CSC Impresa Costruzioni SA, Hochtief AG, Impregilo SpA (7) Sissi, Herrenknecht Gripper TBM S-210, 8.83m (8) Heidi, Herrenknecht Gripper TBM S-211, 8.83m www.herrenknecht.com Eastern tunnel Western tunnel PREVIEW SOUTH BODIO 2003 July and October 2007: The TBMs begin tunnelling the second construction phase in the south with new, larger cutterheads ( 9.43m). October 2008 and February 2009: The 150 meter long Piora Basin is crossed successfully. March 2010: A rock fall in the western tube and the subsequent stabilization measures interrupt tunnelling here until July. October 15, 2010 and March 23, 2011: Final breakthrough. World record. Top tunnelling performances: 36m/day, 179m/week, 705m/month. January and February 2003: Start of regular tunnelling. 2003: After just 200 meters the tunnellers unexpectedly encountered unstable kakirites. This slows down tunnelling for 6 months, since every meter of tunnel must be secured in a complex process. 2004 to 2006: Stable rock alternates with brittle, squeezing rock. September 6 and October 26, 2006: Successful breakthroughs at the Faido underground multifunctional station. Top tunnelling performances: 38m/day, 190m/week, 619m/month.
Page 1 and 2: TUNNELTALK ANNUAL REVIEW 2010 Direc
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Page 7 and 8: In March 2011, the world’s longes
Page 9 and 10: Contrary to expectation, an immerse

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