Search Results: 'Health '

Excavating Olafs
21 December, 2010
Driving the Olafs Tunnel was the longer and the tougher challenge by far of the two road tubes on the Hedinsfjordur project, the main cause being groundwater

Breath of fresh air
14 December, 2010
Tunnels often have a bad name for air quality, some deservedly. A new report next year by the World Road Association (WRA), aims to set tunnel air quality standards for a range of airborne pollutants. Dr.Fathi Tarada, co-chairman of the WRA Working Group on Air Quality, Ventilation and Fire, also managing director of Mosen, explains

Finnish finance to continue airport tunnel
08 December, 2010

Safety and sorrows, Gotthard leads to new practices
06 December, 2010
Tragically the giant Gotthard project has suffered fatalities during a decade of work. But it has also driven significant safety advances in Swiss tunneling

Spending heads south
10 November, 2010
Mexico, Panama and Chile are seeing tunnelling for many of their infrastructure projects, and they’re not alone in the region, Nicole Robinson reports

Advantages of pre-injection grouting
19 October, 2010
The pre-injection method, or injections ahead of the excavation face in underground construction can in many situations offer significant advantages, particularly in difficult ground conditions like water ingress or mechanically poor ground or soil. K. G. Holter and H. O. Hognestad of BASF Meyco look at the use of modern cost-effective methods and material technology for pre-injections in shallow tunnels

Network Rail unveils cut-price plan for UK rail tunnels
29 September, 2010
Network Rail and structural engineer specialist Donaldson Associates have unveiled detailed design ideas of how tunnels in the UK should be renewed and repaired over the next decade.

Managing ground risk
22 September, 2010
Nigel Legge of Nigel Legge Associates and Iain Suttie of Berwin Leighton Paisner look at the role of project management and contracts in managing ground risk

Panama takes delivery of TBM
08 September, 2010

West Ham Flood Alleviation Scheme
26 July, 2010
For the May 2010 meeting of the British Tunnelling Society Steve Lousley of Southern Water, John Sweetnam of Aecom and Andrew Morgan and Tony Parsons of Costain made a presentation on the West Ham Flood Alleviation Scheme in London

Clarifying the fog of fibres
19 July, 2010
In response to reported confusion over the roles of fibres in concrete and, in particular, the claims and counter-claims of suppliers of steel and synthetic (polymer) versions, concerning their advantages and disadvantages, Tunnels & Tunnelling International has decided to try to clarify the issues involved for our readers. Maurice Jones reviews the responses to an information gathering questionnaire and other relevant evidence so that readers can, perhaps, make their own judgements

Ex-Tunneller & Miner
01 July, 2010
Seeking work anywhere in the world

Choosing the right fibre for the right use
01 July, 2010
Benoit de Rivaz, global Tunnelling manager of Bekaert (Building Products, France) presents his opinions and supporting evidence on choosing the correct fibres for reinforcing concrete in underground applications

Donald Frank Rees
17 June, 2010

The Gotthard Base Tunnel and Sedrun
11 June, 2010
At the March meeting of the British Tunnelling Society Hans Bartschat and Michael Gutzeit of Bilfinger Berger’s Tunnelling Division reviewed the new Gotthard Base Tunnel project, and in particular, the Sedrun section of what will be the longest transport tunnel in the world.

The benevolent ‘big brother’
11 June, 2010
Means of monitoring what is going on in transport tunnels are rapidly becoming more sophisticated. Tunnel monitoring and control systems not only have to provide and interpret accurate information in a sometimes harsh environment, they have to prioritise this input and initiate the best actions for users’ safety and operational economy. Maurice Jones reviews some of the latest developments towards these ends.

Design and construction of deep shafts
10 June, 2010
At the January meeting of the BTS Alan Auld of Alan Auld Group presented the methods and challenges of deep shaft design and construction

Hindhead paving contract
26 May, 2010

Meeting shotcrete specifications
23 March, 2010
In the long history of shotcrete, or sprayed concrete, linings underground, never has so much been expected of them. In the transition in scope from hard rock primary support to soft ground permanent support, shotcrete is now expected to create structures under even more demanding conditions, but still at comparatively low cost. Here technical editor Maurice Jones reviews the state of some developments designed to meet such demands

Examining pipe burst
12 February, 2010
At least one accident to operators during pipe-bursting operations has caused concern amongst contractors, the safety authorities and suppliers. Pipe bursting consultant Jesper Nielsen looks at the issue