Search Results: 'NCC'

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.

Grouting
15 October, 1999

Stockholm's Southern Link tunnels
15 October, 1999
This $800m urban motorway forms part of a planned ring road around Stockholm. The Southern Link will be approximately 6km long, with the major part located in tunnels extending for 4.5km beneath existing buildings. A number of interesting construction techniques are being used, including the first major use of SSE explosives in Sweden, as well as intricate grouting and support operations. Construction Journalist Martin Hunt reports.

The world's longest road tunnel
16 September, 1999
September sees the breakthrough of what is claimed to be the world's longest road tunnel, the 24.5km Laerdal Tunnel in western Norway, which has put to good use the hard rock tunnelling expertise for which the Norwegians are famous. Editor Steve McCormack visited the site, where innovative ventilation and the use of large scale mucking plant has contributed to the success of this mammoth project.