Moving Concrete Tunnel Sections

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Location: Round Mountain, Nevada
Client: Round Mountain Gold Corporation
Project: Move Gold Mine Tunnel Sections

GRT was contracted to move four concrete tunnel sections at Round Mountain Gold Corporations mine site in central Nevada. The concrete tunnel sections were part of the mines crushing operation that had to be relocated within the mine.  The tunnel sections weighed 1200-tons each, including conveyor components and were 30' square by 70' long.  GRT moved the tunnel sections one mile from their existing location, up and down several 5% grades, through 180 degree turns, 90 degree turns and "S" turns.  Once GRT arrived at the new location, the tunnel sections had to be set down on their new foundation to tight tolerances, as the four tunnel sections and the conveyors inside had to be reconnected to make one long tunnel.

 

GRT designed & developed a transporter to roll over the tunnel sections, lift them and secure them for the one mile transport.  GRT used several of their systems on the transporter:
⦁    2000-ton capacity lift system for lifting the tunnel sections
⦁    400-ton capacity push/pull system for stabilizing the tunnel sections and transporter frame
⦁    GRT Tension and regular clevis, with hydraulic cylinders, for keeping the tunnel in position for moving up and down grades
⦁    Hydraulic dolly transport system capable of propelling the tunnel sections up the grades as well as controlling the decent of the tunnel down grade, all the while negotiating through a series of turns.

Pressures on the hydraulic systems were connected to a central control station where the loads could be easily monitored against expected shifts in loads throughout the travel route. 

Global Rigging and Transport (GRT) specializes in heavy lift services, heavy equipment moves, rigging, custom engineering and project logistics worldwide. Carrying out a heavy lift transportation project starts with careful preparation and planning. GRT works closely with clients and suppliers in order to establish the best possible solutions for overweight and oversized cargo.