Client:
KiwiRail
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Project Owner:
KiwiRail
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Wireless real-time tunnel convergence monitoring with laser distance meters, ensuring safety and performance across 13 tunnels in the Northland Rail Upgrade
About Northland Rail Upgrade
Work is underway to rejuvenate the rail line in Northland, which includes replacing five bridges and lowering the tracks in 13 tunnels to allow larger sized shipping containers to be carried on the line. The project will significantly reduce road congestion and road maintenance costs through fewer truck journeys, and reduce the overall transport emissions of freight by 66 percent.
KiwiRail has contracted Sixense to provide real time convergence monitoring of the tunnels along the rail line.
What we’ve delivered
Due to the remote locations of the tunnels, a wireless solution with real-time data transfer has been proposed. At each tunnel, a number of convergence arrays has been installed consisting of laser distance meters installed to measure convergence of the tunnel shoulders and crown.
Data is displayed in Geoscope, with real-time alarms triggered and sent to key stakeholders when set thresholds of convergence are exceeded.
Images of the project
tunnels
laser distance meters
