Cape Preston, Western Australia

Aerial view of Cape Preston

Cape Preston, ​Western Australia

Client: MCC / Citic Pacific Mining
Project: Sino-Iron Ore Project
Job: Cape Causeway Embankment Settlement Monitoring

System Installed:

  • Settlement Profiles
  • Manual Monitoring & Reporting
  • Hydrostatic Profile Gauge
  • Vibrating Wire Piezometers


Citic Pacific Mining enlisted MCC to construct the main causeway linking the port with the main mine hub. The 70m wide causeway carries the services, acts as a service route for transportation of large plant and equipment, as well as carrying the Iron Ore to the port in a slurry form. The stability of the causeway is of critical importance.

To monitor the settlement of the causeway and consolidation of the soil during and after the loading stage, Geomotion installed a series of profile tubes in the underlying mud to be read with a Hydrostatic Profile Gauge.

Along with the profile tubing, piezometers were installed to monitor the dissipation of pore water pressure during consolidation. The data is used to confirm the design assumptions, and to demonstrate practically that the causeway is stable and secure.