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Abu Dhabi Gyroscope
20 January, 2020
A case study from Abu Dhabi of the NAV24 gyroscope system

Chelsea to Battersea tunnel surface settlements
16 August, 2019
Monitoring of ground surface movements induced by the construction of the Chelsea to Battersea Pipeline Tunnel project is presented as part of this case study. The surface settlements induced by the shaft construction have been analysed and compared with current methodologies and information from recent projects. Movements from excavation and construction of the tunnel are also analysed, and back-analysis of volume losses is presented. The authors are Veriuska Ortiz Lovera, geotechnical engineer, Mott MacDonald; Andrew Hejdner, project manager, Cadent Gas; James McCaffrey, construction manager, Skanska UK Construction; and Mohammad Arasteh, senior tunnel engineer, Mott MacDonald

James Clark Winner
06 September, 2017
The BTS has recognised the life’s work and contribution of Joseph Gallagher Ltd chairman Joseph Gallagher by awarding him this year’s James Clark Medal. He talks to Keren Fallwell about his career

Municipal Growth
22 March, 2017
Demand for microtunnel construction in Ontario for municipal pipelines has grown remarkably. Nicole Robinson reports on the Centre of Advancement for Trenchless Technology’s upcoming workshop

Maida vale
29 July, 2014
Pipejacking is a key part of a flood alleviation project which is set to protect hundreds of properties in northwest London

Going under
25 September, 2013
The growing use of microtunnelling in Ontario in the 20 years leading up to the Millennium shows the region’s underground industry keeping pace with developments worldwide. Seamus Tynan of Ward and Burke Microtunnelling presents this brief history from 1980 – 2000

Pipe roof development: the switch to slurry
26 December, 2011
Pipe roofs are gaining increased importance in Japanese jacking philosophy. Toru Sato, general manager at Iseki Polytech, explores the development of the technology

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

Cleaning up Limerick
15 March, 2007
Russell Naylor, engineers representative for Limerick City Council, Ken McIntyre, of J Barry & Partners, and Peter Jacques, divisional manager tunnelling for J Murphy & Sons, gave a presentation to the British Tunnelling Society in January about the complex works for Ireland’s Main Drainage Scheme in Limerick

TBM recovery after shaft seal failures
01 December, 2003
Polyurethane resins can be strategically applied in the recovery of inundations, flooded shafts and similar disastrous situations below ground. In this article, Peter Town, managing director of Oxford Hydrotechnics, discusses two different shaft seal failure case histories and explores the methodology adopted in each situation

Excavation Products
01 August, 2003
The latest excavation products

AGD buys Iseki
16 October, 2002

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

Winner - Small Project Award
13 June, 2002
Amec Specialist Business - Taff's Well Project

Logging on for TBM productivity
01 April, 2002
A TBM production logging system proved an effective tool for site-based decision-making during construction of the Portsmouth Transfer Tunnel for the Portsmouth and Havant Wastewater Treatment Works & Sludge Recycling Scheme in the UK. Simon Stroud of Halliburton KBR described the system for the British Tunnelling Society's Harding Prize competition, on which this article is based.

Small Bore and Pipe Jacking
20 August, 2001

Microtunnelling manufacturers
09 June, 2001
T&TI reviews the major suppliers of small bore, remote controlled tunnelling equipment.

Micro modifications give macro improvements
12 December, 2000
After over 15 years of development, microtunnelling is now practically a mature technology but some improvements are still being made.

Leading roles in LA
01 July, 2000
North America is a major growth area for microtunnelling. T&TI speaks to Paul Nicholas, president of leading firm Soltau Microtunnelling, about projects under way.