Search Results: 'Tamrock'

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.

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.

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.