Auckland's Central Interceptor TBM to start boring under the Manukau Harbour
...n 100 bore samples were taken before construction began, to ensure the geology was well understood along the...steel reinforcement in the segments which are governed by the changing geology. The TBM was launched in the...Saudi Arabia selects contractors to bid for NEOM Delta Junction tunnelling works
...about 5 kilometers of tunnelling work, total 26,5 kilometer. The tunnelling method is described as drill and blast, cut and cover in a hard=rock geology. Report lists following co...
cover tunnel photo by: Matt Brown from London, England / CC BY
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