PROJECT

BHP – Ramp 74 Levee Wall Construction

SECTOR

Resources & Energy

CLIENT

BHP – Coal Operations

LOCATION

Blackwater Mine

Construction of a levee was required to provide sufficient flood immunity by preventing ingress of floodwater into the Ramp 74 in-pit tailings storage. The Ramp 74 levee project is in a remote area approximately 20 km to the south of the Blackwater Mine site entrance.

AE-Group-BWM-Levee-Construction

Project Challenges

The construction of temporary access routes enabled us to establish a borrow pit located adjacent to the existing Sirius Creek diversion. Additional sediment basins and open drains were constructed through land remediation to allow for the diversion of high overland water flow.

To further enhance the design detail, mine pit progression and longevity of the delivered product, hydro seeding and topsoil to levee batters were applied with gravel capping to levee crest and rock armoring to levee batters.

Project Approach & Objectives

  • Relocation and monitoring of local fauna
  • Clearing and grubbing
  • Onsite material sourcing for geo technical specifications
  • Excavation and construction of cut-off trenches in levee
  • Topsoil stripping and stockpile management
  • De watering infrastructures and pump management
  • Management of certified geo technical testers for compliance
  • Construction open drainage systems for levee
  • Application of geo textile and rock protections
  • Application of hydro seeding
  • Implement traffic management controls and solutions
  • Road design, construction and maintenance (mine spec)
  • AS-Build to formation Level with batter slopes and drains
  • Major equipment and Plant Hire
  • Loss of Time Injuries (LTI) = 0

 

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