Doug Hood Mining

Earthworks contract at Stockton Mine

June 29, 2017

In early 2017 we commenced an earthworks contract at Stockton Mine to raise the height of an earth dam embankment to increase the dam’s storage capacity.

The work utilises EC290 and EC360 excavators, A40E articulated dump trucks, a D8T dozer and 16H grader.

 The crew of operators select, process as required, and excavate material from several borrow pits, and cart on haulroads and modified haulage routes on the embankment and into one of three zones – impermeable, transition and bulk. The material is dumped and dozer pushed into layers. A grader is used to maintain haulroads and haulage routes across the embankment to each zone.

 The impermeable zone (1m thick in cross-section) on the wet face of the dam requires the compaction of <400mm sandstone or granite material to target density with a vibrating or impact roller.

 Being at Stockton the works are very susceptible to wet weather and more-so during the winter months with material easily saturated. Construction therefore requires use of dry weather to dry out and progress the works before sealing the fill, bunding, and roads, and reinstating drainage channels ready for the next rain event.

To discuss our civil or mining project capability please contact Kevin Davies on 0274 325 869 or kevin.davies@doughood.co.nz

To discuss the hire of our plant please contact Gavin Begg on 0274 354 190 or gavin.begg@doughood.co.nz

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