In early June 2025 two 6.65 m diameter Earth Pressure Balance TBMs finished their excavation work on India’s Delhi Metro Phase IV DC‑07 package, achieving a seamless drive from Airforce Station to...
The 3rd PIARC International Conference on Road Tunnel Operations and Safety will take place in Cracow in October 2026. The third edition of this event will explore key aspects of road tunnel planning,...
For more than 20 years, the six tunnels of the Semmering tunnel chain on the S 6 have been the fastest and, above all, safest connection between Styria and Lower Austria. However, it is now necessary to modernize the tunnels both structurally and in terms of technical equipment. Since April 28, 2025, the 21 kilometers of tunnels (10.5 km in each direction) are being completely renovated.
In June 2025 Implenia has signed an “Early Contractor Involvement” contract with Swedish company SKB (Svensk Kärnbränslehantering AB) to build the first underground section of a deep repository for radioactive waste near the Forsmark nuclear power plant in Eastern Sweden.
On October 7 and 8, 2025, the construction equipment industry will gather for the 8th Construction Equipment Forum at the Coreum in Stockstadt (Rhine)/Germany. Under the theme “Rethinking Construction Machinery: Sustainable. Digital. Autonomous.”, this high-level management conference will bring together over 350 professionals and executives from across the sector – including machinery manufacturers, construction companies, and suppliers.
A significant moment for the cross-border Brenner Base Tunnel railway infrastructure project: after around 26 months of continuous work, the tunnel boring machine Ida successfully completed the first breakthrough of the main tunnel tube on the Austrian side on August 22, 2025. But there has been a lot more going on at the various construction sites of this mega-project in recent months.
The German Concrete and Construction Technology Association (DBV) has honored O. Univ.-Prof. Dr. mult., Dr.-Ing. E.h. mult. Konrad Bergmeister with the association‘s highest award, the...
It is an ambitious plan set to revolutionize the Paris transportation network: The realization of the Grand Paris Express includes the extension of an existing metro line (Line 14) and the construction of four new metro lines in the inner and outer ring zones (Lines 15, 16, 17, and 18). Completion is planned for 2030, but even in the early construction phases, it became clear: this is no ordinary infrastructure project. Line 17, in particular – intended to connect northern Paris with Le Mesnil-Amelot – posed major challenges for the engineering and construction team.
Building a second S-Bahn core route 44 meters below street level is a huge endeavor. ARGE Marienhof, a joint venture between Implenia and Hochtief, is building the new Marienhof station for Deutsche...
The final part of the series of articles on risk management and contract models in tunnel construction focuses on the selection and description of remuneration models as a central component of project delivery models.
In late June 2025, the last of two Herrenknecht Single Shield TBMs successfully completed its drive for the new railway line between Rishikesh and Karnaprayag in the Indian Himalayas. The first machine had already reached its destination in mid-April. Now both parallel tubes of the more than 20-kilometer-long tunnel system are complete.
Phase 2A of Indonesia’s Jakarta Mass Rapid Transit (MRT) expands the capital city’s mass transit system. The project extends the city’s Red Line from Bundaran HI into the old city and connects the...
The Münster Tunnel Construction Colloquium in May 2025 was a great success and received consistently positive feedback from participants. In a relaxed atmosphere, the fully booked event at the Münster University of Applied Sciences provided experts from the tunnelling profession with a valuable platform for in-depth technical discussions.
On May 22, 2025, the 10th Rock Mechanics and Tunnelling Day took place in Weinheim, Germany. The large number of registrations exceeded the capacity of the large lecture hall at the WBI Center in Weinheim this year. 320 visitors registered for the specialist event to attend the high-calibre, practice-oriented presentations by more than 20 experts from the fields of rock mechanics and tunnel construction.
On June 25 and 26, 2025, an in-depth workshop on the highly topical subject of injections in structural engineering took place at the Recklinghausen Training Mine. Around 100 experts from engineering...
In April 2025, Prof. Dr.-Ing. Roland Leucker turned 60 and has thus dedicated almost exactly a third of his life to STUVA. When he was offered the position of Deputy Managing Director in 2006 by...
Excavated material from tunnel construction is a valuable resource and by no means waste. It can be used for a variety of construction purposes, for example in traffic infrastructure construction or...
With its new formula, the epoxy resin filler “StoPox WB 50” speeds up construction site processes. It is designed for filling and partial reprofiling of tunnel inner shells and is also suitable for...
