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Investigate and implement
17 October, 2017
Toronto is preparing to build 22km of tunnels to improve waterways in the Great Lakes Basin. Mark Bruder of R.V. Anderson Associates Limited, Daniel Cressman of Black & Veatch, and Robert Mayberry with the City of Toronto outline the geotechnical investigation program for the Don River and Central Waterfront Wet Weather Flow System

An art for humble men
19 October, 2012
Tunnels revisits the traditional methods. Hand mining and its health and safety related concerns are well known, while the traditional soft ground timber supports are increasingly forgotten, as the old methods get pushed aside by the march of mechanisation. Alex Conacher reports

Heading South
31 May, 2010
Peter South has been involved in tunnelling for more than forty years. During this time he has worked on several major infrastructure projects both at home and abroad, and chaired the British Tunnelling Society.

Forty Years of Tunnels & Tunnelling
02 June, 2009
A retrospective view by Colin Mackenzie

Delivering the DLR Extension
10 November, 2007
At September’s British Tunnelling Society meeting, Harvey Pownall, general manager of concession company WARE, Andy Allder, lead designer for Halcrow, and Dalgit Dhanda project manager for Morgan Est (formerly Amec) presented the contractual, design and construction challenges on London’s Docklands Light Railway (DLR) Woolwich Arsenal Extension

Harding Prize 2007 winner Datchet repair
26 June, 2007
In his winning Harding Prize 2007 paper, Ian Whitehead of Mott MacDonald, describes the repair of the Thames Water raw water pipeline near Datchet, in the UK, on which he was a design engineer based on site for the duration of the works

DLR dives safely under the Thames
26 June, 2007
Editor, Tris Thomas, reports from the Docklands Light Railway (DLR) extension under the River Thames, in London, where lessons learned on the first of the 1.8km drives looks sure to assist boring the second

Hyperbaric health & safety
10 May, 2007
Technical journalist Maurice Jones checks on current accepted compressed air procedures, and why technology transfer and development is still an important course of action

Managing risk at T5
01 April, 2005
The very well attended 20 January 2005 meeting of the British Tunnelling Society heard a presentation by Ian Williams, the T5 Tunnels Delivery Manager for BAA who described some of the key aspects of managing risk for the tunnelling carried out for the Terminal 5 project at Heathrow

Hammering along at Heathrow
01 July, 2004
Underground construction for London Heathrow Airport's new Terminal 5 scheme is progressing rapidly, with a number of tunnelling projects now complete. Assistant editor, Patrick Hudd, visited the site this May and reports on the current Piccadilly Line and Heathrow Express extensions

High pressure drive crosses the Thames
01 July, 2004
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 and discovered how the team dealt with chalk under 3.5 bar water pressure without compressed air, an innovative shaft lining and a severely damaged cutterhead - all with little effect on the schedule

Midsummer mix
01 July, 2004

Performance of fibres for concrete
01 September, 2003
John Greenhalgh, technical sales representative for Bekaert Building Products UK, describes various types of fibre reinforcement available for underground construction and how the various characteristics of these fibres affect concrete performance

Flying ahead at Terminal 5
01 September, 2003
As part of Heathrow Airport's new Terminal 5 project, numerous underground works are required, including a Storm Water Outfall Tunnel, a service tunnel under the A3044, and extensions to the Piccadilly Line and Heathrow Express. Peter Clarke, planning manager, and Selby Thacker, production leader, for the Morgan Vinci JV, and Ian Williams, BAA project leader, describe the bored tunnel works currently in progress

Anchorage testing and monitoring
01 September, 2003
M Chappell and BH Jackson of Amec, Dr A Starkey, of the University of Aberdeen, describe the latest developments in GRANIT, the new non-destructive non invasive testing system designed to assess anchor integrity.

The ART of success under Heathrow
01 September, 2003
Exactly one year after tunnelling commenced on the 1.3km long twin-bore Airside Road Tunnel (ART) project, under the UK's busiest airport taxi-ways, breakthrough was successfully achieved. Ian Williams, BAA project leader, and Selby Thacker, production leader for the Morgan Vinci JV, describe the challenges met during the project

Creating a 'safety culture'
01 June, 2003

Breakthrough technology on CTRL
01 April, 2003
Last month, CTRL's 'C320 - Thames Tunnels' TBM broke through into the Thurrock reception chamber, on the north side of the River Thames in the UK, using a new technique involving the use of glass-fibre bars (GFRP) instead of steel reinforcement for construction of the diaphragm headwalls. Jürgen Mielenz, temporary works manager for the contractor, the Hochtief/Murphy JV, describes the methods employed

Insuring an industry
01 October, 2002
As a result of some recent high-profile incidents within the industry, insurers have been increasingly concerned that tunnelling was becoming uninsurable in the market. A joint working party, between the British Tunnelling Society (BTS) and the Association of British Insurers (ABI), has since produced a draft Code of Practice that would allow insurers to continue to offer cover. Presentation of the draft Joint Code of Practice to BTS members took place on 4 July 2002, followed by an in-depth discussion

Babtie's new director
11 September, 2002