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Kombilösung in Karlsruhe: tunnelling machine at its goal

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The advance for the 2 km long railway tunnel under the centre of Karlsruhe was completed with absolute precision on September 7 2015. Several product solutions from the VMT portfolio were in use and they contributed significantly to the successful project on our doorstep.

The large project “Kombilösung” of the Karlsruher Schieneninfrastruktur-Gesellschaft (KASIG) promises citizens and businesses in the centre of Karlsruhe a noticeable relief. The trams travelling sometimes every minute along the Kaiserstraße will be redirected through a tunnel under the pedestrian zone that is due to start operation in December 2018.

Durchbruch

The tunnel advance was undertaken by a Herrenknecht mix shield machine with a diameter of 9.29 m. Throughout the whole project, from the advance start in November 2014 at the Durlacher Tor until breakthrough on September 7 2015 at the Mühlburger Tor, a VMT team ensured the reliable operation of the navigation system and various monitoring systems.

 

The TUnIS Navigation TBMLaser was used for precise navigation requirements. Equipped with a total station and a target unit installed in the shield of the TBM, it calculates the machine position and allows the advance team to align the TBM exactly to the planned tunnel alignment.

1DX_1099All data collected at the Karlsruhe site for the advance and monitoring were consolidated in the IRIS (Integriertes Risiko- und Informations-System), which with the preparation and clear presentation of the relevant data provided a reliable basis for efficient process control at all times.

 

The lining of the city railway tunnel was realised using segments with an internal diameter of 8.20 metres. For optimum positioning of the segment rings, the  TUnIS Ring Sequencing softwarewas used on the tunnelling machine. The semi-automatic tail shield clearance measuring system GAPtrix from VMT served in addition to provide direct transfer of the TSC values to the software.

1DX_7891To ensure the maximum safety for an inner-city advance with sometimes a small overcut of 4.50 m along the dense building development along the tunnel axis, the responsible project managers relied on comprehensive, automatic Deformation Monitoring. For this, VMT supplied the hardware and a specially tailored software package with which all data arising for seamless and detailed monitoring were collected and processed.

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Visit us at STUVA Expo 2015!

The STUVA Expo 2015 will take place from 01 – 02 December 2015 in Dortmund, Westfalenhalle. At our stand C119 we will inform you about communication system HADES and other special fields.

STUVA Expo is one of the world’s leading and largest events in the tunnelling sector.

See more information on the STUVA Expo Website

We are looking forward to your visit.

Also in 2015 we were at Intergeo, the leading exhibition for geodesy, geoinformation and land management.

The exhibition took place from September 15 – 17 in Stuttgart. We had our stand in hall 4, stand no. A4.086 and presented our special field deformation monitoring.

On the Website  of intergeo you can find first impressions of the Intergeo exhibition.

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Crossrail’s tunnelling marathon under London is now completed. The Crossrail tunnelling started in May 2012 and was finished at Farringdon with the arrival of the tunnelling machine Victoria in May 2015

Over the last three years, eight 1,000 tonne tunnelling machines have bored 42km of new rail tunnels under London.
Teams of dedicated workers have been working 24 hours a day to complete the tunnels for Europe’s largest civil engineering project – with the aim to upgrade the existing rail network and build major new stations in central London and Docklands.

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The tunnels weave their way between existing underground lines, sewers, utility tunnels and building foundations from station to station at depths of up to 42m.
Nearly 70 million working hours have been completed on the Crossrail programme so far. Some of them were performed by VMT employees.
VMT GmbH configured a comprehensive package with customized navigation and control systems for tunnel excavation in London in close cooperation with the project partners. The VMT systems monitored and regulated parameters and interfaces needed for tunnel construction, therefore supporting project management in process control and quality assurance.
The laser based navigation system TUnIS measured the position of the 7.8 metre TBMs in relation to the designed tunnel alignment to the nearest millimetre. TUnIS transmitted the measured data to monitors for the TBM operator, responsible for precisely navigating the TBM underground. The TUnIS software also incorporated a ring sequencing module to assist in ring selection:
Depending on elements such as alignment radius or location of cross passage construction, the ring sequencing module recommends which segment type to build. The ring sequence calculation takes into account the data delivered by VMT’s Automatic Tailskin Clearance Measurement System SLuM.
Additionally the Integrated Risk and Information System IRIS provided an efficient tool for data management for this huge project: IRIS collects and analyses all relevant tunnelling data and stores them within a central database – thus assisting overall management of the construction site.

The underground railway system of Saint Petersburg – the Russian city with over a million inhabitant is one of the deepest metro systems in the world due to the town’s unique geological conditions.

The first line that has been opened on 15th November 1955 is worldwide famous for its architecture: with typical Soviet designs featuring exquisite decorations and artwork this metro is one of the most attractive and elegant in the world. The Metro network consists of five lines with a total of 113.6 km route length and 67 stations. Every day 2.8 million and an annual 1.02 billion passengers are carried.

Now 3.7 kilometers have been added. That’s the length the TBM drilled within the 16-month driving time before the breakthrough in June 2015. The TBM with a diameter of 10.65 m, had to drive radii up to 600 m. With the VMT products TUnIS Navigation TBMLaser, TUnIS Navigation Office and TUnIS Ring Sequencing a smooth advance could be guaranteed despite those special challenges. Through the web-based information system IRIS the persons in charge could get access from anywhere on the data they needed of the machine or the advance.

St.Petersburg