Search Results: 'Herrenknecht'

Challenging soil conditions at Porto
01 December, 2002
Tunnelling consultant, Nicola Della Valle, reviews progress on the Porto light metro extension in Portugal, where difficult ground conditions have posed serious challenges to engineers

El Azhar road tunnel Cairo's new frontier
01 November, 2002
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 project pioneered the use of a re-inforced sacrificial lining and also includes an unusual user escape system. Bill Welburn and Xavier de Nettancourt of Vinci Construction Grands Projets, describe the design and construction of the tunnel

The show goes on… and on… and on….
01 October, 2002

Following the French connection – A86
01 October, 2002
The contentious 10km long, A86 highway tunnel, forms the last section of the Paris ring motorway. The single-bore, double road deck design has been a subject of scrutiny, following a series of European tunnel fires. Adrian Greeman recently visited the project works

Mixed messages for microtunnelling
01 October, 2002
Opportunities to exploit microtunnelling as an efficient form of utilities' and water infrastructure construction, have often been ignored in favour of cheaper, but often more disruptive methods. Amanda Foley, assistant editor, explores the industry's attitude to current market conditions and asks what the future holds

Small Bore & Pipe Jacking Products
06 August, 2002
The latest in small bore and pipe jacking products

Heathrow's ART takes off
01 July, 2002
In the sensitive confines of an airside tunnel construction site, planning ahead to minimise settlement near a busy runway is vital. Tris Thomas reports from the ART project at the UK's Heathrow airport where extensive measures have been undertaken to aid the smooth construction of the project's 1.3km long, 8.1m i.d. twin tunnels

All change on Upper Diamond Fork
05 May, 2002

Policies and projects - Swiss style
01 April, 2002
Informative presentations on two quite different tunnelling projects in Switzerland demonstrate the differences in approach between the contracting arrangements and construction of tunnels in Switzerland and elsewhere in Europe. The presenters were Martin Knights, director of Infrastructure, Halliburton KBR and Paul Hoyland, Technical Manager for Balfour Beatty Major Projects

Barcelona's new backbone runs deep
01 March, 2002
Due to start in May, construction of the long-awaited Barcelona Metro Line 9 will connect with and cross all the city's existing metro and rail lines. Consultant, Nicola Della Valle currently working with Paymacotas of Spain, describes the challenges involved and how these objectives will be achieved with minimum surface disturbance through an innovative integrated station and tunnel solution.

Herrenknecht achievement
01 March, 2002

Fine lining in Bangkok
01 March, 2002
A close working relationship between designer and contractor ensured the successful first use of sprayed concrete for tunnel support under Bangkok, writes Stephen Woodrow of Maunsell, in his entry for the British Tunnelling Society's, Harding Prize award. He describes the design approach adopted in the construction of temporary lining for intervention shaft adits for the city's metro

Downunder 2002 on track
01 February, 2002
As reported in the January edition of T&TI, the ITA World Tunnel Congress will be hosted by the Australian Underground Construction and Tunnelling Association (AUCTA), a founder member of the ITA, in Sydney from 2-8 March 2002. Garry Ash of Walter Construction, president of the AUCTA, explains why the timing of this event is particularly relevant