Search Results: 'Lovat'

Automatic monitoring on CTRL's C250 tunnels
01 September, 2004
In order to gain consent to tunnel under London's railways and provide safety assurances to the surface railway authorities, CTRL's C250 team developed a comprehensive automatic monitoring system, which allowed expensive mitigation works to be avoided. Lyndon Preece, C250 survey manager, Frank Mimnagh, Rail Link Engineering settlement engineer, James Martin, C250 settlement mitigation engineer and Stewart Harrison, C250 survey, describe the system adopted

Long distance pipe jacking in Asia
01 July, 2004
Jim Broomfield discusses the importance of automatic bentonite pipeline lubrication systems in achieving a low friction coefficient during pipejacking, using recent Asian project successes as examples

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

Flexible shield proves its worth
01 March, 2004
The 17.4km long Hofoldinger Tunnel is the final link in Munich's southern water supply chain. The tunnel is being bored through extremely mixed ground using an innovative combination of tunnelling methodologies. Dipl -Ing. Christian Stahn and Dipl- Geol. Ulrich Ferstl of contractor Bilfinger Berger explain