June 23 - Enerpac has employed its new EVO synchronous lifting system to position a 3,600-tonne tunnel boring machine at the 4.5 km Waterview Connection motorway, which is being constructed in Auckland, New Zealand.

Ten 600-tonne cylinders with internal stroke sensors controlled by the EVO synchronous lifting system lowered and tilted the tunnel boring machine into its starting position, so that it could bore a 2.5 km underground twin tunnel.

Once positioned, Enerpac's synchronous lift system pushed the machine a few metres forward to gain purchase and begin tunnelling.

After the length of the first tunnel is complete, the system will be deployed again to lift and tilt the machine in order to complete the other parallel length of the twin tunnel, before arriving back at the starting point.