Earth Stability

Case Studies

Project:  South Yard Cliff Line Stabilisation

Date:  March 2014

Client:  New Zealand Defence Force

This measure and value project was awarded to ESL through competitive tender following a pre-qualification process. 

The project involved stabilisation of the Devonport Naval Base cliff line to eliminate the ongoing damage that was being caused to sensitive refuelling equipment and services. 

The project required 610 No. drilled and grouted galvanised + epoxy coated anchors and 2,300m² of Maccaferri double twist PVC coated rock fall mesh. 

Due to limited access from the top and highly sensitive fuel and communications services located along the base of the cliff line, this project required well thought-out planning and highly skilled project management to eliminate the risk of serious incident, delays and disruption to the operation of the base.

Work was completed on time and to budget.   In particular, work was completed without any incident, delay or disruption to the operation of the Naval Base.  

Earth Stability was awarded the '2016 Hynds Construction Awards Category A Award', for its work on this project. 

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Completed rock fall mesh and rock bolts

Completed rock fall mesh and rock bolts

Completed rock fall mesh and rock bolts 2

Completed rock fall mesh and rock bolts 2

Excavator mounted rock drill

Excavator mounted rock drill

Installation of rock fall mesh

Installation of rock fall mesh

Mobilisation of rope access drill rig

Mobilisation of rope access drill rig

Receipt of 'AB Equipment 2014 Catogory A' safety award for project

Receipt of 'AB Equipment 2014 Catogory A' safety award for project

Rock fall protection above tunnel portal

Rock fall protection above tunnel portal

Storm water outfall pipes and brackets

Storm water outfall pipes and brackets