Pre-grouting and securing the tunnel face or the annular gap grouting of the segmental lining: anyone familiar with these challenges will also be familiar with the search for a safe injection process...
Pumped storage power plants are a technology that has been used for energy storage for over 100 years. In view of the energy transition, they are once again coming into the spotlight as they offer a...
Forbach Pumped Storage Power PlantPorr Tunnelling is carrying out the conversion of the Rudolf Fettweis plant in Forbach (Germany) into a modern pumped storage power plant on behalf of EnBW Energie...
The Chesapeake Bay Bridge-Tunnel in Virginia, USA, has been one of the largest structures of its kind since it opened in 1964. Until now, the Thimble Shoal Tunnel has been a bottleneck for motor traffic. Over a distance of around two kilometres, traffic has so far been restricted to two lanes. This is set to end in 2028. A major milestone for the expansion has now been reached: TBM tunnelling for the new parallel Thimble Shoal Tunnel was successfully completed at the end of January 2025.
SBB is planning to build a new railway tunnel and an additional track between Bern Wankdorf and Ostermundigen. Among other things, this will enable the expansion of railway services between Bern and Thun.
Tunnel construction can generate over 200 tonnes of excavated spoil per hour. If this spoil cannot be used on the same construction site, it often ends up in landfill sites. To enable sustainable...
Pumped storage power plants are a technology that has been used for energy storage for over 100 years. In view of the energy transition, they are once again coming into focus as they offer a flexible...
Winners of the seven categories of the 10th Anniversary series of the ITA Tunnelling Awards were announced and the Brunel Trophies presented at the Awards gala celebrations in Genoa, Italy.These...
On 22 May 2025, the 10th Rock Mechanics and Tunnelling Day will take place at the WBI Center in Weinheim (Germany). The conference will be organized by WBI GmbH, sponsored by the German Railway (DB InfraGO AG) and supported by the German Engineering Association (Arbeitskreis Bautechnik of the Württembergische Ingenieurverein).
