Projects
London Crossrail (C310- Thames Tunnel)
HOCHTIEF, in joint venture, successfully completed the Crossrail C310 Thames Tunnel project on time and on budget. The works comprised of a wide range of civil engineering disciplines including construction of two 2.6km long 6.2m internal diameter bored tunnels from Plumstead to North Woolwich. The C310 team was recognised by Crossrail as one of the better performing contractors against their ‘league table’, as part of their Performance Assurance process this also received a ‘Green Line award’ for reaching Crossrail’s high standard of environmental engagement.
Copenhagen City Ring
The Cityringen project will form a new circular line in the city centre and will consist of two 17.4km tunnels and 17 new stations (two of which are transfer stations) all at 30 metres below ground level.
Road Tunnels under Suez Canal
The twin tube road tunnels of North Ismailia under Suez Canal have been completed. The tunnels, designed to link the Sinai Peninsula more closely to the Egyptian heartland in future, will open up new economic opportunities.
Crossing the Suez Canal via the efficient tunnels will only take 10 minutes in future.The construction companies involved were Petrojet/Concord for the 4.8 km Ismailia tunnel.
In the past 19 months the four identical Herrenknecht Mixshield TBMs, diameter 13,020 mm, safely formed the 2 tunnels near the Egyptian city of Ismailia at depths of up to 60 m, at a water pressure of up to 6 bar and with the low coverage of the tunnel route below the canal.
Dubai Expo 2020
Expolink, a consortium led by Alstom and including Acciona and Gulermack, was awarded the construction contract for the Route 2020 project. Alstom is supplying the rolling stock and will also carry out electromechanical works related to the project, while Acciona and Gulermack will be responsible for the civil works.
The Route 2020 comprises a 15km-long line, of which 11.8km will be an elevated section and the remaining 3.2km underground. Its route is designed to cover populated areas in the city to make commutation easy for the visitors and the residents of Dubai not only during the six-month world fair but also in the future.
The 3.2km-long tunnel will be located between Discovery Gardens and Green Community and will have depth ranging between 12.5m and 36m. It is expected to be completed by December 2018.
Tunnel boring on the Route 2020 is being carried out using a tunnel boring machine (TBM) named Wugeisha EXPO 2020.
River Humber Gas Pipeline Replacement Project
Client: National Grid
Region: Yorkshire & Humber
The TBM is a slurry pressure balance machine and features a 4 m-diameter cutting head that will grind through the chalk using a bentonite slurry as a lubricant. The 160 m-long train will travel behind the cutting edge, placing the six, 225 mm-thick, 1.2 m-wide trapezoidal tunnel lining segments, before the annulus between the outer diameter of the lining and the chalk is grouted to prevent any water leakage.
Paris Metro - Extension of Line 14 South
Client: Paris Metro
Contractor: Salini Impregilo & NGE
Region: Paris, France
Type of Machine: EPB
The contract, awarded to and its joint-venture partner Nouvelles Générations d’Entrepreneurs (NGE) by La Régie autonome des transports parisiens (RATP), concerns one of four sections that will make up the 14-kilometre extension of Line 14 South to the airport. On Lot GC04, Salini Impregilo, and NGE will excavate a 4.1-kilometre tunnel from Pont de Rungis station to the site of a new station at Orly.
The extended line will improve connections and travel times between Orly and the city by linking the airport to Line 18 of the Paris metro and a new one to be called Line 15.