Gudai Rail North

Gudai-Darri Rail North

Principal: Rio Tinto
Client: Acciona Clough Joint Venture/John Holland
Location: Pilbara, Western Australia
Status: In-Progress

Since May 2019 Survey Dynamics have supplied onsite survey services for the construction of the Northern section of Rio Tinto’s Gudai-Darri mine rail line. The project is located in the Pilbara region between Chichester and Wittenoom, covering a distance of 99km of new rail line and rail access road for the new Gudai-Darri mine.

The scope of works includes:

  • 99km of formation clearing pegging (Over 5000 Stakes)
  • Onsite Borrow Pit design and construct
  • Bulk earthworks 2.13 million cubic meters of fill and 745,000 cubic meters of cut material
  • 2 bridges, 1 going over FMGs existing rail crossing at CH260 of the rail and 1 at Auski at Great Northern Highway. The Bridge at CH260 has the largest I-beam ever made in Australia being successfully landed by the Survey Dynamics team.
  • Machine control setup and support on both GPS / UTS / LPS (With over 1000 temporary star iron pickets installed and digital levelled) for machine control plant of all makes (Trimble , Leica , Topcon)
  • Drone surveys (PPK) for accurate volume reporting of fills and excavations and also in the aid of reporting/control of the formation build.
  • Design and setout of 497 culverts (33.6km)
  • As constructed Reporting of all pavements, batters, culverts, bridge pre pours and post pours, bridge settlement, borrow pits.
  • Onsite support for the Client’s Commercial team in regards to volumes, areas, mass haul, model redesigns/comparisons.
  • Weekly reporting of the 99km rail broken down into separate pay items for the Client’s Commercial team.