Servicing Helsinki’s ‘Underground City’
Pregrouting was adopted to maintain the existing groundwater level, protecting the old wooden piles of buildings above
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Lemminkainen's Axera T11 is used within the red granite of the area -
Pregrouting was adopted to maintain the existing groundwater level,... -
A Sandvik Tamrock T11 3-boom rig at work under Helsinki -
An Axera T11 rig is moved between the project's multiple headings -
Map showing the current drill and blast works under Helsinki's city centre -
A drill rig operator at work on the service tunnel
