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This paper, adapted from that presented at the Underground Construction conference in London, UK, in April by Andrea Krpo, describes ventilation concepts, including fire control, for a proposed rail base-tunnel [...]

Mexico's largest infrastructure project is a 62km long emergency wastewater pipeline being built to prevent flooding in the downtown area of the capital. Ground settlement in Mexico City has caused [...]

Tunnelling attention in Europe this year has swung from the Alps, following completion of excavation on the world-beating 57km long Gotthard high speed rail tunnel, to the UK with a [...]

In order to renew the existing aged extra high voltage (EHV) transmission cable network as well as expand and enhance the power supplies to the central and southern parts of [...]

The baggage tunnel forms a vital link in Heathrow Airport's underground integrated transfer baggage system--a 2.1 km tunnel running between Terminals Five, Three and One. The scale of the transfer [...]

Established in 1922 to serve the coal mining industry, it was not until 1972 that family owned Jennmar began manufacturing systems designed to support the roofs of tunnels and mines. [...]

Newly-completed infrastructure projects around the world are discussed. The world's largest-stand alone Building Integrated Photovoltaic power project has commenced operation in Shanghai, China. Meanwhile, construction of the Access to the Region's Core Trans-Hudson Express Tunnel project is currently on track.

Ontario Power Generation's Niagara tunnel project includes the planning, design and construction of a 10.2km long, 12.7m internal diameter tunnel and associated facilities to divert an additional 500[m.sup.3]/sec of water [...]

Built in the 2nd Century BC, Via Egnatia was the first highway built by the Romans outside Italy. It crossed the Balkan peninsula from the Adriatic sea in the west [...]

Ireland's Limerick Main Drainage scheme is a US$239M project that involves constructing some 48km of sewers of up to 2.82m diameter for Limerick City Council. The construction stage comprised 19 [...]

Constructing the 2.4km long, 3m i.d. Dartford Cable Tunnel under the River Thames has proved a testing experience for UK contractor Amec. T&TI editor, Tris Thomas, recently visited the site [...]

Today's tunnel fire suppression systems generally have three main objectives: to provide protection and safety for users; to support rescue personnel; and to protect the tunnel structure. Whatever system is [...]

The Karahnjukar hydro-power project involves driving some 70km of tunnels as well as dam construction and the building of an underground power plant. The initial tunnel construction using Tamrock rigs is already running well ahead of schedule and the first of the three Robbins TBMs is now on site and being assembled in the harsh winter environment.

The progress and future plans of the 56km Gotthard Alptransit tunnel between Erstfeld and Bodio are reviewed. The Gotthard tunnel is constructed mostly by using tunnel boring machines (TBMs).

The progress about the Lotschberg Alptransit tunnel between Frutigen and Raron in Switzerland is reviewed. The 34.8km Lotschberg tunnel is driven mostly by drill and blast, and also using tunnel boring machines (TBMs) alongside.

THE LIST OF 'STAR' PROJECTS IN Europe includes the Gotthard base rail tunnel through the Alps between Switzerland and Italy, which, at 57 km long, is the longest in the [...]

Tunnels pose particular challenges in the design of fire safety measures, for which numerical models have an increasing role to play. Stewart Miles, senior consultant for FRS, the Fire Division [...]

The subway tunnel under the Stuttgart airport in Germany was constructed so as to block subsuface water, rather than rerouting the water.

Section 2 includes twin bores for the London and Thames tunnels.

Geoconsult Arup Joint Venture designed an eastern route around Dublin to its port which included a tunnel.

The difficulties faced by the Dutch engineers in linking two European cities with high-speed-rail roads, in the famously flat Dutch countryside are discussed. Complicated contractual boundaries, accidents at the site, design changes demanded by local authorities and the difficulty in cutting through the peat and clay tested the nerves of the Dutch engineers and the technology used in boring tunnels.

In 2000, highways in the United States had more than 250,000 roadway-rail crossings, according to the Federal Railroad Administration (FRA). As urban growth continues and more roads are built, this [...]

Tunnels are a major feature of many pumped storage schemes, and their design and maintenance needs are key parts of research underway in Norway. The work is vital if the [...]

Boston's Artery Project, often referred to as the Big Dig by Bostonians, will likely cost $15 billion when complete. Though criticized for cost overruns, the price is actually acceptable when the benefits of it are considered. Fiscal and politcal aspects aside, it is an engineering marvel.

THINK YOU'VE GOT A TOUGH JOB? Try spending two years working in a tunnel out in the middle of nowhere, packing up all your equipment and hitailing it out every […]