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Results

  • Immediate mitigation of rockfall hazards on this critical rail corridor.

  • Rapid mobilisation enabled maximum utilisation of the shutdown period.

  • Quality and sequencing of work facilitated efficient remobilisation for subsequent phases.

  • Zero significant safety incidents, with client expectations for quality fully met

Project

Solution

  • Excavator-mounted drills worked below powerline clearance, with wagon drills used above 4m.

  • A six-person crew installed 75 ground anchors (3m deep), with ~276m² of mesh secured.

  • Grouting operations were sequenced alongside drilling and mesh fixing to optimise time.

  • Daily operations extended to 13-hour shifts to maximise productivity within the shutdown

Project

Challenges

  • Active train operations and overhead power line obstructions constrained drilling methods

  • Limited slope access and steep terrain increased complexity of anchor installation

  • A compressed eight-day possession window required accelerated delivery

  • Weather conditions included rain, wind, and high sunlight exposure, impacting productivity

rail line slope stabilisation nz

Project

Overview

Geovert was engaged by KiwiRail to deliver slope stabilisation and mesh netting above the Johnsonville railway line in Wellington. The works targeted rock fretting hazards along a heavily trafficked passenger line, which had not experienced significant shutdowns in recent years. 


Operating across two separate sites, the project was delivered within a strict eight-day Easter holiday possession, requiring highly coordinated construction methodologies to maximise outputs in the limited timeframe

Johnsonville Rail Line Slope Stabilisation | NZ

Slope stabilisation works delivered in a compressed rail possession window
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