WJ Group Admin June 21, 2019
Construction of a Deep Shaft for CrossrailWJ Whitepaper Publication Credentials AUTHORS: A. M. McNamara, MSc, PhD T. 0. L Roberts, PhD, CEng, FICE, CGeol, MCIWEM P. R. J. Morrison, BAI, PhD, CEng, MIEI G. Holmes, PhD WJ Groundwater Ltd, London, UK DATE: 2007 Abstract An 8·2 m diameter, 37·5 m deep shaft has been successfully constructed
WJ Groundwater December 7, 2015
Dr Toby Roberts, the Chairman of WJ, gave a fascinating presentation on dewatering cross passages using in-tunnel well systems. The presentation was one of the features at the 3rd Arabian Tunnelling Conference & Exhibition 2015 held in Dubai, UAE in November.
WJ Group Admin August 17, 2015 Ejector DewateringWell DrillingProbe Drilling-Read More- WJ Group Admin August 17, 2015 Well DrillingProbe Drilling-Read More- WJ Group Admin August 17, 2015 Probe Drilling-Read More- WJ Group Admin August 6, 2015 Deepwell Dewatering-Read More- Dan Carpenter October 31, 2022
The Silvertown Tunnel is a new twin bore road tunnel beneath the river Thames to connect the Greenwich peninsula to Silvertown in London’s docklands. The tunnels are being constructed by TBM and at 11.9 m diameter, the largest ever used in the UK.
Dan Carpenter June 17, 2022
Tunnels and Tunnelling Magazine is one of the world’s leading and longest established trade journals for the tunnelling industry with a worldwide digital and online reach of over 30,000 individuals per month.
Dan Carpenter September 17, 2021
The British Tunnelling Society, an Associated Society of the Institution of Civil Engineers (ICE), formed 50 years ago provides a crucial form for development of the tunnelling industry in the UK and overseas, and recently invited WJ’s Chairman, Dr Toby Roberts to speak at an evening event regarding “Dewatering Strategies for Underground Infrastructure in the
Dan Carpenter April 26, 2021
WJ Groundwater - 40 years old and still going strongThe year is 1981. A pint of milk costs about 19p, a loaf of bread about 37p, and Prince Charles and Lady Diana Spencer have just got married. Britney Spears, Serena Williams and the Wispa Bar are all born. A truly remarkable year already I’m sure