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  Date 1999
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Give us the tools to do the job...
01 December, 1999

Tunnelling's flexible friend
01 December, 1999
Sometimes viewed as a poor relation to fully mechanised excavation, drill+blast still holds an important place in the tunneller's armoury. Technical Journalist Maurice Jones reports that an increasing level of sophistication in drilling and explosives use ensures a fair share of work, sometimes when other methods fail.

UK tunnelling projects
01 December, 1999
The September 1999 meeting of the British Tunnelling Society, which took place at Olympia in conjunction with the Tunnel Construction and Piling 99 event, boasted an excellent turn-out. The subject of the informal discussion was current tunnel construction in Kent. There were three papers: the North Downs and Ashford tunnels for the Channel Tunnel Rail Link and the Ramsgate road tunnel.

Oslofjord challenge
01 December, 1999
Unexpected ground conditions faced during excavation of the 7.2km long Oslofjord subsea road tunnel in Norway are described by Lise Backer, Norwegian Geotechnical Institute, working for the Norwegian Public Roads Administration as site engineering geologist for this project; and Olav Torgeir Blindheim of OT Blindheim, who has been the specialist adviser.

Arbitration
01 December, 1999

Alternative Disputes Resolution
01 December, 1999

Staying out of trouble
01 December, 1999
The last five years have seen major changes in the resolution of commercial disputes, particularly in the adoption of Alternative Disputes Resolution(ADR) and the streamlining of litigation and arbitration. Several factors have been at work, not least the cost of coercive methods of dispute resolution. Daniel Atkinson, BSc(Hons), LLB (Hons), CEng, FICE, FCIArb, DipICArb, chairman of the International Board of lawyers James R Knowles, traces the evolution of methods currently in use.

Owner's role
01 December, 1999

Contractor's design
01 December, 1999

Hard lessons at Qinling
01 December, 1999
Recent breakthrough of the 18.5km Qinling rail tunnel in the remote north west of China marked a significant stage in building one of the longest rail tunnels in the country, where imported TBM technology was used for the first time by local crews on a major scheme. The project has proved instructive for both client and TBM manufacturer, Wirth. Editor Steve McCormack visited the remote site to see how a combination of TBM and drill+blast technology was employed to complete this impressive drive.

Strengthening parts of London's Tube
01 December, 1999
Strengthening the London Underground's Covered Ways No. 58, (Circle Line) and No. 12 (District Line) is described by Senior Project Manager Peter Madden.

Consultant opens in Denver
01 December, 1999

Going green in US
01 December, 1999

Japanese and Dutch consolidate
01 December, 1999

Acquisition saves contractor
01 December, 1999

Many pressures on ground improvement
10 November, 1999
'A stitch in time saves nine' goes the old proverb. The same could be said of a few litres of grout, but the requirements for ground stabilisation for underground excavation are much more complex than that. Technical Journalist Maurice Jones summarises some of the main options available today.

Grouting the shield tail gap
10 November, 1999
If a tunnel is driven in unstable ground, the danger exists that the surrounding ground relaxes and loosens during the tunnel advance. Dr Siegmund Babendererde of Babendererde Ingenieure emphasises the importance of maintaining the primary stress state while driving the tunnel.

In-situ stresses affect cavern stability
10 November, 1999
Weicheng Jin, Norwegian University of Science and Technology; Einar Broch, Norwegian University of Science and Technology; and Ming Lu, SINTEF, Institute of Civil and Environmental Engineering, describe problems experienced during construction of the Xiaolangdi and Ertan hydropower projects in China. These were due in large measure to the in-situ rock stresses encountered, a subject with important implications for support requirements in structures of this kind in similar rock conditions.

UrrĂ¡ multi-purpose hydro project
10 November, 1999
Patience and persistence were the keys to winning a large hydroelectric project in northern Colombia, while knowledge of the market and experience of working in remote locations meant successful completion 16 years later. Lars-Erik Alm, Project Manager, and Peter Walden, Contract Manager, Skanska International Civil Engineering, report.

Kuala Lumpur LRT System 2
10 November, 1999
As his entry for the British Tunnelling Society's 1999 Harding Prize for young engineers, Andy Alder, Halcrow Group, gave an account of the construction methods used on the tunnels for the Kuala Lumpur Light Rapid Transit System 2.