Mainova AG, of Frankfurt on Main, is the largest energy utility in the state of Hesse and supplies more than a million people with power, gas, water and heat. On 10 August 2017, the new Mainova...
The 500 km long new/upgraded Nuremberg-Berlin rail route, also known as German Unity Transport Project No. 8 (VDE 8), was approved by the German Parliament in 1991 in the form of a high-speed line (up...
The DB Projekt Stuttgart–Ulm GmbH celebrated the breakthrough of the second (west) bore of the Bad Cannstatt Tunnel on 10 October 2017. This means that in about three and a half years, the two bores...
On 29 September 2017, the Swiss Federal Council presented the submission for the improvement stage of rail infrastructure for 2030/35. In neither of the variants with investment volumes of 7 or 11.5...
Construction work on the Albvorland Tunnel, which will be 8176 m long, officially began on 6 October 2017. Implenia has been commissioned by Deutsche Bahn to build the tunnel, a key section of the new...
Even ten months in advance, an impressive repeat exhibitor rate is already apparent for the 12th InnoTrans. Current registration figures for the world‘s leading transport technology fair exceed the...
The new ICE high-speed line between Wendlingen and Ulm, just on 60 km in total length, is currently under construction in the south-east of the Stuttgart metropolitan region as part of the expansion of the pan-European high-speed rail network. A further major project – the around 8.3 km long Albvorland Tunnel near Kirchheim unter Teck – has recently been started, and is the final tunnel-construction project, closing the remaining gap between Stuttgart and the Swabian Alb. Maximum safety is also needed for this project, with overburdend varying from a maximum of 65 m to a minimum of only just on 9.50 m and head of water of up to 45 m. This enhanced safety awareness was also reflected in the technical schedule of works for the segment seal in the context of the project tendering stage.
The tunnel below the A8 federal motorway is located on the Swabian Alb plateau, which is intersected by the new Wendlingen–Ulm high-speed rail route. Reports on the major project and the plan approval section (PFA) 2.3 Alb plateau have already appeared elsewhere in the magazine tunnel. The tunnel lies close to the highest point of the route, in the third route section of the roughly 21 km long plan approval section.
Until now, segment-lined tunnels in low mountain formations have been constructed with one layer of pressure-tight lining, with sealing being provided by elastomer gasket profiles. The application limit of this method of construction is about 5 bar. If the water pressure is higher, a much more elaborate and thus more expensive double-shell construction with an additional drainage layer between the inner and outer lining is necessary. In the recent past, a solution for this problem in mechanised tunnelling with segment lining has often been discussed in the specialist world: a drainage layer of permeable material for annular gap grouting. This would then make the installation of an additional inner lining with drainage layer no longer necessary.
The construction of the 51 km long Abwasserkanal Emscher (AKE) sewer tunnel is the largest individual project to improve the River Emscher in the Ruhr, Germany and is technically and financially one of the greatest challenges that the Emschergenossenschaft as client and their construction partners have ever had to overcome. Among the individual construction sections of the major project, construction section (BA) 40 is exceptional, not only because of its construction with segment lining.
focusing on “Excavation and Support in Soft Ground Conditions”. Some of the best specialists and experts of tunnelling in the world took their time to present and share their knowledge with an international audience of roundabout 60 people (some 15 young professionals and students from WTC host country Norway).
The International Tunnelling and Underground Space Association (ITA) has been collecting data on international tunnel and underground construction since 2011. A first global market analysis was compiled in 2014. For the second overview, presented at the WTC 2017 in Bergen, the ITA member nations (73 countries) have once again been involved in collecting and checking the data. In total, information from 89 countries and 2300 projects was included in the recent analysis. This second market analysis clearly shows that the tunnelling market has a considerable size, with a global annual output of 86 billion euros.
A new project started with the involvement of the STUVA in August 2017: „Verbesserung der Sicherheit in unterirdischen städtischen Verkehrsbereichen bei Einsatz neuer Energieträger (SUVEREN)“...
The improvement of the resilience of underground public transport systems is the main focus of a new research project, which has been coordinated by the STUVA e. V. since 1 August 2017. The project...
The STUVA Conference 2017, the International Forum for Tunnels and Infrastructure, will take place on 6 to 8 December 2017 in Stuttgart. At this „family meeting of the tunnelling industry“, you can...
from Günter Girnau, honorary member of the STUVA boardOn 18 August 2017, Prof. Dr.-Ing. Dr.-Ing. E. h. Heinz Duddeck, long-term professor of structural engineering at the TU Braun-schweig and...
The topic of resources efficiency has also increasingly gained in importance in recent years. Soil and foundation engineering occupies a special ranking in this context: soil and rock account for...
