Search Results: 'CTRL'

CTRL civils complete
01 November, 2004

London's segmental lining development
01 October, 2004
Tunnel engineering technology evolves and improves with every project. Several projects in the UK that illustrate some recent developments in segmental tunnel lining technology include Section 2 of the Channel Tunnel Rail Link (CTRL), and Crossrail's Moorhouse Shaft, in London. Technical journalist, Chris Webb, discusses some of London's modern and traditional segmental lining methods

Precision measuring for segment moulds
01 October, 2004
The precision required for the manufacture of moulds used for the casting of tunnel lining segments is frequently not stated; the tender documents for a typical segmentally lined tunnel project only giving the dimensional tolerances for the finished segments. In some cases however, only the tolerances for a sample build of two test rings is given.

An end to leaking joints
01 October, 2004
Modern Gasketed tunnel and shaft linings are remarkably watertight, however, leaks do occur. This is usually caused by damaged gaskets or hair line cracks. Injection into the joints or cracks with polyurethane resin provides a ready solution, which has proved to be cost effective and extremely durable.

Bespoke handling
01 October, 2004
Specialist Plant Associates produce a wide variety of bespoke segment handling equipment to suit customer requirements. Recent contracts in this field include provision of surface segment handling equipment to CTRL's C220, consisting of hydraulic tippers, feeder systems and lifting frames to suit its 7.15m internal diameter fibre-reinforced precast concrete lining.

Chunnel documentary tonight in UK
13 September, 2004

CTRL hosts health, safety and environment conference
06 September, 2004

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

Investigation & Monitoring products
01 August, 2004

CTRL paves a link to Channel Tunnel
01 July, 2004

Fire considerations on the CTRL Tunnels
01 May, 2004
The UK's Channel Tunnel Rail Link Section 2 features long stretches of twin bore rail tunnel under London. Eddie Woods, RLE London Tunnels Area project engineer, and Arup director, and Paul Scott, Arup associate, describe the cross passage design and fire considerations for the lining

Completed high speed tunnels for high speed link
08 April, 2004

Setting a good example
01 April, 2004

Finale for CTRL London Tunnels
01 April, 2004

King's Cross Phase II stopped pending review
01 March, 2004

Give up CTRL to gain Crossrail?
01 March, 2004

Lessons from C320's TBM interventions
01 February, 2004
Maurice Gallagher and Bob Brown, of J Murphy & Sons, Tony Ridley, of Tony Ridley Hyperbaric Associates, and Andy Swift, of Rail Link Engineering, discuss the use of compressed air for TBM interventions on the UK's CTRL Contract 320 "Thames Tunnels" and the project's use of oxygen decompression techniques

Planned UK bore upsets local MP
01 February, 2004

Annie breaks through
28 January, 2004

First CTRL 'London Tunnels' complete
04 January, 2004