Search Results: 'National Grid'

Raising the pressure
10 November, 2011
Adding an extra turbine to the Vianden pump storage plant in Luxembourg requires a new vertical pressure shaft. Benjamin Kunstle and Alexander Frey of Herrenknecht explain how the raiseboring is sinking in

TUCA opens its doors to the industry
02 November, 2011

Where the work is
18 October, 2011
As T&TI goes to press the general and business media are awash with stories of economic gloom and dire predictions, and yet the tunnelling industry in Western Europe seems relatively buoyant. Can this comparatively happy state continue? Maurice Jones checks on the major current and planned projects and the prospects for some big players headquartered in Western Europe

Prepared for the long haul
18 October, 2011
Since precast concrete segmental tunnel lining was invented, there has never been so much development of the ‘product’ as in recent years, even though, superficially, it may look the same. Maurice Jones looks at some of these developments aimed at increasing tunnelling progress whilst avoiding mishaps

Mitigation and alternatives: making hand mining better
26 September, 2011
A current trend in tunnelling, as in many other industries, is against manual labour, but in many situations hand mining seems the logical first choice until one considers the hazards involved that are arguably greater then those associated with large-section tunnelling. Maurice Jones checks on the current status of the activity, mitigation to improve hand mining, and the alternatives offered by some equipment manufacturers.

BTS Committee elections
11 May, 2011

Hard treatment for unforgiving chalk drive
13 April, 2011
Climbing down the steep cliff-side steps, past the flint layers, of which there are many, each indicating some great, apocalyptic extinction event, it becomes clear just how deeply and how steeply the pipe must descend. Alex Conacher explores the Joseph Gallagher worksite near Brighton, one of the most ambitious jacking projects ever undertaken in Britain

Metro ventilation
14 February, 2011
Paul C Miclea, director of Aecom Global Tunnel Ventilation Services, Oakland, California, discusses the ventilation demands on modern metro station design and the essential considerations of space for ventilation facilities for both normal running and emergency requirements

Making the case for tunnels
18 January, 2011

Skanska chosen to build deep cable tunnels
05 January, 2011