Dr.-Ing. Roland Leucker celebrated his 50th birthday in April 2015. Since 2008 he has been the CEO of the STUVA Inc. also taking over responsibility for the STUVAtec GmbH in 2014. He was able to...
Once again more than 1500 experts from the field of underground construction will get together for the 2015 STUVA Conference, the international forum for tunnels and infrastructure, held from December...
The swing bridge at Sluiskil in the Netherlands' province of Zeeland crosses the canal from Gent to Terneuzen. It is a bottleneck for road traffic: The bridge opens on average 23 times a day for a total of up to five hours in order to enable ships to pass. This led to long waiting times for traffic south of the Westerschelde Tunnel, which opened in 2003. After four years of construction the twin-bore Sluiskil Tunnel opened in May 2015, which now enables an uninterrupted flow of traffic.
In recent years serious accidents have occurred frequently at pedestrian traffic light crossings spanning the urban railway tracks in Cologne. The reasons for accidents involving pedestrians or...
When shotcrete is used in tunnelling, a stable and robust shotcrete system is essential for safe and economical construction. In order to ensure a robust system, the reactive components of the concrete (cement, superplasticizer, accelerator) have to be coordinated. The article describes the Accelerator System Test (German: Beschleuniger-Systemtest BEST), which can be used to coordinate these components. On the Stuttgart–Ulm rail project, the BEST was used successfully to remedy unsatisfactory shotcrete performance.
The authors of this article believe that the best methods for excavation of the Brenner Base Tunnel are mechanized – specifically using either open-type or shielded hard rock tunnel boring machines....
Sandvik Construction Tunneling introduces the add-on instrumentation TCAD+ to their DT and DD series underground drill rigs used in tunneling and mining. The TCAD+ instrumentation, a successor of...
In order to arrive at a projected service life of 100 years, among other things underground water must be prevented from entering a tunnel’s traffic area and the bearing structure must be protected from underground water. This report explains how this is achieved with waterproofing systems consisting of waterproofing membranes in the case of pressure-tight mined tunnel structures.
Las Vegas the famous Nevada resort city with its casinos and entertainment-business, draws 90 percent of its water from Lake Mead. This largest reservoir in the United States is fed by the Colorado...
A new tunnel in the Swiss Canton of Graubünden, to be built within the next four years, should secure a long-term, winter-proof route between Upper Engadine and the Chur/Landquart region. Rhätische...
