• Project location: Leipzig, Germany
• Client: Eisenbahn-Bundesamt, Dresden, DB, represented by the Free State of Saxony, Saxony, represented by DEGES, Deutsche Einheit,
  Fernstraßenplanungs- und -bau GmbH
• Processing time: 1997-2013
• Type: Railroad tunnel, 2 tubes (one tube per direction of travel)
• Length: 2 x 1775 m
• Diameter: 9,00 m
• Overlap: between approx. 7 m and approx. 16 m
• Machine type: Hydroshield

Areas of responsibility​

• Tunnel construction expert / tunnel construction technology Expert opinion on planning​
• Tunnel construction consulting for design planning and the invitation to tender​
• EBA test engineer for the sign sections incl. Building security procedures and the stopping points Wilhelm-Leuschner Platz and market​
• Process controlling for shield tunnelling​
• Construction process and mechanical engineering consulting for the sign sections​

• Project location: Germany, Czech Republic​
• Client: DB Netz AG​
• Processing time: 2021 - dato​​
• Type: Railway tunnel - two single-track tubes
• Lengthapprox. 30 km
• Diameterapprox. 11 m outside
• Overlap: approx. 60 m to max. 600 m (TBM)
• Construction method: Shotcrete construction and shield driving
• Machine type: single sign TBM

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Areas of responsibility​

• Expert services for tunnel construction during planning, Service phases 1 - 4 (optional 5 ff.)
• Tunnel construction support,
  Service phases 1 - 2 (optional 3 ff.)​

• Project location: Świnoujście (Poland)
• Client: City of Świnoujście (Poland)
• Processing time: 2019 - 2023
• Utilization: 2-lane road tunnel
• LengthTBM: approx. 1,800 m
• Diameter: 13,50 m
• Overlapapprox. 16 m below the Swine
• Machine type: Hydro shield

Areas of responsibility​

• Tunnel construction consulting for the planning and Construction phase​

• Project location: Vienna, Austria
• Client: WIENER LINIEN GmbH & CO KG, Vienna (A)
• Processing time: 2020 - to date
• Utilization: 2 single-track subway tunnels, 4 stations,
  3 emergency exits
• Length: TBM: approx. 2 x 2,100 m
• Route: approx 2 x 2,800 m
• Diameter: TBM 6.84 m
• Overlap: between approx. 12 m and approx. 20 m
• Machine type: EPB - Shield

Areas of responsibility​

• Tunnel construction consulting for the service phases Construction​
• Control and evaluation of machine data​
• Project duration: planned until 2027​

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• Project location: Koraple, Styria - Carinthia, Austria​

• Client: ÖBB-Infrastruktur Bau AG, Austria

• Type: Single-track monorail tunnel (mixed traffic),
  2 tubes 

• Building volume: 350 million (IMM planning area)

• Length: approx. 2 x 32.8 km​

• Diameter: DN 9.90 m, segment 9.50 m​

• Overlap: between approx. 5 m and 1250 m

• ​Machine type: EPB shield (open/closed-mode) convertible to hard stone​

• Processing time: 2006 - 2022 (construction lot KAT 3)​

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Areas of responsibility​

Shield tunnelling Carinthia, L = 11.16 km (KAT 3) Mitterpichling open construction method (OBW Mi):

• Planning of the construction method, the shield run and segment lining / inner shell for the shield section
• Advice on awarding contracts
• Tender planning for the tunnel structures (machine excavation and OBW Mi), corresponds to: HOAI object planning Lph: 1, 2, 3, 4 and 6, 7 HOAI / structural planning Lph: 2, 3, 4, 5 and 6
• Execution planning for the tunnel structures (machine excavation and OBW Mi), corresponds to: HOAI object planning Lph: 5, HOAI structural planning Lph: 4, 5
• Construction supervision Mechanical engineering consulting
• Process controlling
• Geotechnical construction supervision for shield driving

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• Project location:  Berlin, Germany
• Client: Berliner Verkehrsbetriebe (BVG)
• Processing time: 2013 – 2016
• Utilization: Subway tunnel, 2 tubes
• Length: 2 x 1,620 m
• Diameter: 6,67 m
• Overlap: 5 - 17 m
• Machine type: TVM (Mixschild)

Areas of responsibility

• Provision of sub-project manager for sign routes

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Project description

The continued construction of the U5 subway line in Berlin-Mitte will close an important gap between the terminus at Alexanderplatz and the Brandenburg Gate. The line runs under the Spree and Museum Island.

The tunnel was built with 2 tubes and a length of 2 x 1,620 m with a Mixshield TVM from the Max-Engels-Forum to the subway station Brandenburger Tor with three further stops and subway stations.

The undercutting of the Spree and the Spree Canal with a minimum overburden of four meters as well as the undercutting of the City Palace, which is currently under construction, should be mentioned as a challenge. Also worth mentioning are the tangential castle bridge foundation on the Spree Canal and the underpass "Unter den Linden" of the subway line U6 and north-south S-Bahn lines currently in operation.

The typical subsoil conditions in Berlin, consisting primarily of tightly graded, well-drained and therefore free-flowing sand in combination with a very high groundwater table, present a major challenge for the planning and execution of the excavation pit as well as the approach and entry procedures for shield driving.

The main components of the geology in the tunnel cross-section are valley sands, boulder clay as well as stones and boulders. The excavated material is highly abrasive and largely dense.

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• Project location: Cochem, Germany
• Client: DB ProjektBau GmbH, Frankfurt, Federal Railway Authority, Frankfurt / Saarbrücken
• Processing time: 2009 - 2014
• Type: Single-track railroad tunnel
• Length: 4242 m
• Diameter: 10,00 m
• Overlap: between approx. 5 m and approx. 255 m
• Machine type: EPB shield (open/closed mode)

Areas of responsibility​

• EBA test engineer Structural inspection of the implementation documents​
• Experts for TVM​
• Expert services during construction in conjunction with the technical preservation of evidence for the Sign drive​
• Process controlling for shield tunnelling​

• Project location: New Erfurt - Leipzig/Halle line, Germany
• Client: Federal Railway Authority, Halle,
  DB ProjektBau GmbH, Leipzig
• Processing time: 1995 - 2011
• Type: Single-track railroad tunnel (mixed traffic),
  2 tubes
• Length: 2 x 6970 m
• Diameter: 10,87 m
• Overlap: between approx. 3 m and approx. 65 m
• Machine type: Hydroshield (open/closed mode)

Areas of responsibility​

• Participation in the planning of the construction process, the Shield drive and the Segment lining ​
• Participation in the preparation of the tender documentsdocuments ​
• Advice on awarding contracts​
• EBA test engineer Structural inspection of the implementation documents​
• Process controlling for shield tunnelling​
• Tunnel construction/ construction process engineering Advice on shield tunnelling and the shield machine​

• Project location: Stuttgart, Germany
• Client: DB Projekt Stuttgart-Ulm GmbH, Stuttgart, Federal Railway Authority, Stuttgart
• Processing time: 2011 - to date
• Utilization: Single-track railroad tunnel
• Length: TVM: 2 x 4,035m + 2 x 3,620m | SBW: 2 x 1,150m
• Diameter: 10,82 m
• Overlap: between approx. 6 m and approx. 220 m
• Machine type: EPB (open/closed mode)

Areas of responsibility​

• EBA test engineer (Structural inspection of the implementation documents)
• TVM consultant (Tunnel construction consulting for shield-specific questions)​

• Project location: Innsbruck (A)
• Client: BRENNER BASISTUNNEL BBT SE Innsbruck (A)
• Processing time: 2023 - dato
• Utilization: 2 single-track railroad tunnels,
  leading pilot tunnel
• Length: TBM: 8,100 or 8,400 m
• Diameter: Diameter 10.37 m
• Overlap: up to approx. 1,000 m
• Machine type: EPB (open/closed mode)

Areas of responsibility​

• Tunnel construction consulting for the construction phase of the Continuous tunnelling Sillschlucht - Pfons​
• Project duration: planned until 2025​

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