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IN THIS MONTH'S The Hummingbird Project, two cousins, played by Jesse Eisenberg and Alexander Skarsgard, quit their jobs at a high-frequency trading firm in pursuit of a grand idea: They're [...]

TBM excavation proved cheaper than the drill+blast alternative when tendering for the two 5.5 km long x 3.5 m diameter water tunnels on phase II of the Inanda-Wiggins water supply [...]

Two major project are under construction in the city of Dusseldorf in Germany. These unusual and interesting subsurface works were visited late last year by delegates attending a conference in [...]

The town of Protvino, 120 km south of Moscow in the new Russian Republic, is well-known amongst the world's physicists, many of whom have been privileged to conduct experiments at [...]

Villaret is one of a series of seven twintube tunnels currently under construction in Italy's scenic Val d'Aosta (WT October, 1990). Together with a further four tunnels in design, these [...]

People have long been fascinated by tunnels; there is something almost magical about going underground in one place and coming up in another. We have learned to use tunnels to [...]

SELECTION OF METHODS Two main factors have to be considered when deciding the method to be used to construct a tunnel, the size and shape of the tunnel and the [...]

GEOTECHNICAL DESIGN The rapid development of Norway's hydroelectric potential during the 1970s and early 80s, and major road tunnels during recent years, has had a significant influence on tunnel design [...]

DESIGN OF SOFT GROUND DRIVES The design of a driven tunnel in soft ground involves much more than an analysis of the lining. It requires considerations of geotechnics, alignment, lining [...]

NATM BY ANY OTHER NAME The use of the NATM system for building tunnels in North America has not exactly caught on since its introduction in 1983. The first NATM [...]

Tunneling engineer's efforts to overcome the danger caused by soft carboniferous deposits at the Mitholz section of Lotschberg tunnel in Switzerland are explained. They are using 'Copco Rocket Boomer XL3 C' drillers for drilling and bolting along with concrete lining.

The details about the Sitina tunnel that will be constructed in Slovakia to decrease the traffic problems are discussed.

The TL2K tunnels are a relatively small part of Contract 103, being built as part of Section 2 of the Channel Tunnel Rail Link. But the size belies the complexity [...]

Terminal 5 is one of the largest construction developments in Europe today; with a monthly spend of about US$150.2M and a total estimated outturn cost of US$7.9bn. In 2008, Terminal [...]

Gauddarrama tunnels are the longest tunnel sections on the Madrid-Segovia section, which uses four Tunnel Boring Machines (TBM). Some of the important features of the project are discussed.

On 21 October 2004, an audience of BTS members and guests heard a presentation on the construction of the Uetliberg Tunnel, part of Zurich's west bypass. The speaker was Stefan [...]

In order to gain consent to tunnel under London's railways and provide safety assurances to the surface railway authorities, CTRL's C250 team developed a comprehensive automatic monitoring system, which allowed [...]

The US$7.3bn Terminal 5 (T5) scheme at London Heathrow Airport, in the UK, is among the largest infrastructure projects currently being undertaken in Europe. The site of the new terminal [...]

Tunneling on the CSO control tunnel project in Providence by Shank/Balfour Beatty for the Narragansett Bay Commission is underway. The TBM components were lowered into the 290ft (88m) deep access-working [...]

The 16.9km long Gotthard Road Tunnel in Switzerland, is the key element of one of the most important road connections through the Alps. The single-bore tunnel with bi-directional traffic on [...]

Every time a tunnel at shallow depth has to be built in the presence of ground water, the problem of dewatering needs to be addressed. A typical solution is to [...]

The US$530M Cross City Tunnel is one of the most complex and challenging infrastructure projects undertaken in Sydney; Australia, with underground railway lines, building basements and services to be negotiated. [...]

In mid-December, Architect Walter Waschle presented a 55 pound symbolic key to a new facility in Hinwil, Switzerland, to Peter Sauber, Team Principal of the Sauber Petronas Formula 1 team. [...]

The longest road tunnel in the world, the 24.5km Laerdal tunnel in Norway, provided unique design developments for ventilation and driver safety. Tunnelling under high rock stresses offered significant challenges [...]

El Azhar road tunnel Cairo's new frontier: the 2.4km long, twin bore El Azhar road tunnel was designed and built in just 40 months to Europe's highest fire-safety standard. The [...]

On September 19 this year, during the second construction phase of the Istanbul Metro a tunnel excavation collapsed beneath a two-story boarding-house which also collapsed into the resultant cavity. Five [...]

The 1,200m four-lane twin-tube Girsberg road tunnel on the A7 connection across the Rhine at Konstanz from Switzerland to Germany is a Swiss tunnelling project that has employed several techniques [...]

Atlantic City is due to see completion of an ambitious $330 million design-build tunnel and highway project in July 2001. Yonkers Contracting, Co., Yonkers, NY, and Granite Construction, Watsonville, Ca, have been involved in the thirty-month project.