Order for world's largest TBM

Russian operator company NCC (Nevskaya Concession Company) has placed an order with German manufacturer Herrenknecht for the world's largest tunnel boring machine (TBM). The Mixshield TBM, for construction of the Orlovski Tunnel, "will surpass all previous TBMs" with a diameter of 19.25m and it is designed to construct a mega-tunnel to link both halves of the centre of Russia's second city St Petersburg under the River Neva and speed up traffic.
April 10, 2012 Read time: 2 mins

Russian operator company NCC (Nevskaya Concession Company) has placed an order with German manufacturer Herrenknecht for the world's largest tunnel boring machine (TBM).

The Mixshield TBM, for construction of the Orlovski Tunnel, "will surpass all previous TBMs" with a diameter of 19.25m and it is designed to construct a mega-tunnel to link both halves of the centre of Russia's second city St Petersburg under the River Neva and speed up traffic.

At the contract signing, entrepreneur Martin 2592 Herrenknecht met the Russian Prime Minister Vladimir Putin in the city at a high level business meeting.

"Prime Minister Putin wanted to find out at first-hand about the gigantic automobile tunnel project, an extremely challenging construction project under the River Neva," says Herrenknecht.

The TBM contract is the biggest single order in the company's history and represents a huge technical challenge, which "has been well prepared by extremely thorough, intensive preparatory engineering collaboration between the customer and the contractor." Including the back-up the Herrenknecht Mixshield will be 82m long, and on its own the tunnelling shield will weigh around 3,800tonnes and deliver 8,400kW drive power to the cutting wheel.

The leap in diameter to 19.25m will enable the machine to excavate 600m³ of soil hourly, and the excavation area is said to be more than 50% larger than that for the largest TBM currently in operation in the world.

"A Mixshield is the quickest and safest solution for driving the around 1km-long tunnel bore under the Neva in the face of the high groundwater pressures. An extremely ambitious timetable has been set for implementation of the project," says Herrenknecht.

Tunnelling is set to begin in St Petersburg in the spring of 2013 with the tunnel due to be taken into operation in 2016.

At present, vehicles have to use the various bridges in order to cross the River Neva from the city centre to the northern districts and the orbital freeway.

The mega-tunnel, with two three-lane carriageway levels will considerably improve the traffic capacity.
Road Structures

For more information on companies in this article

Related Content

  • India plans major infrastucture investment
    April 5, 2012
    India says it turned its Commonwealth Games into a world-class success, and now it aims to do the same with its infrastructure. Patrick Smith reports On October, 2010 India put itself on the world stage, and disaster appeared to loom as a catalogue of problems dogged its biggest ever sporting event. Costing nearly US$2 billion to stage, the most expensive Commonwealth Games ever were, according to some, in doubt. After years of planning some projects were incomplete, there were health scares and a br
    Read More
  • Morocco's road programme boosts economy
    February 9, 2012
    A major road programme instigated by King Mohammed VI of Morocco is helping to boost the country's economy and modernise infrastructure. This forms part of a plan to boost tourism, a key part of the country's income from 8 - 10 million. There were less than 300km of motorways existing when King Mohammed VI inherited the throne from his father in July 1999. Since then, the figure has increased to over 1,000km and this is set to almost double in the next five years. A hugely significant highway programme was
    Read More
  • Major Australian tunnel project
    June 9, 2025
    A major Australian tunnel project is being carried out in Victoria.
    Read More
  • India plans major infrastucture investment
    February 10, 2012
    India says it turned its Commonwealth Games into a world-class success, and now it aims to do the same with its infrastructure. Patrick Smith reports. On October, 2010 India put itself on the world stage, and disaster appeared to loom as a catalogue of problems dogged its biggest ever sporting event. Costing nearly US$2 billion to stage, the most expensive Commonwealth Games ever were, according to some, in doubt.
    Read More

Highlighted Content