Context

The Metro Tunnel is Melbourne’s biggest rail project since the City Loop was built in the 1970s. It involves constructing 9km of twin rail tunnels and five underground stations from North Melbourne through to the Domain precinct, via the CBD.
The two station caverns in the CBD are complex, each involving multiple shafts, entrance-ways and adits, which are constructed with minimal disruption to the bustling city above.

Services

Sixense is using Cyclops to provide automatic real-time deformation monitoring of structures and buildings, including shafts, caverns, adits, buildings, roadways, live rail tracks, live tram tracks, utility tunnels and historic structures.

A significant achievement, and a first-of-a-kind, is the real-time monitoring of the interior cavern construction using a complex group of networked Cyclops. It allows reference data to be transferred along the cavern to provide data with sub-millimetre precision, all whilst navigating around the busy environment of heavy machinery and on-going construction.

In this constantly changing environment, maintening this global monitoring network and the data quality requires multiple Cyclops relocations and almost daily update of the configuration from highly experienced surveyors and crew.