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A company of the BRUGG Group
United States
Kanmantoo Copper Mine 2019 - Geobrugg Kanmantoo Copper Mine 2019 - Geobrugg
Kanmantoo Copper Mine 2019 - Geobrugg Kanmantoo Copper Mine 2019 - Geobrugg
Kanmantoo Copper Mine 2019 - Geobrugg Kanmantoo Copper Mine 2019 - Geobrugg
Kanmantoo Copper Mine 2019 - Geobrugg Kanmantoo Copper Mine 2019 - Geobrugg
Kanmantoo Copper Mine 2019 - Geobrugg Kanmantoo Copper Mine 2019 - Geobrugg
Kanmantoo Copper Mine 2019 - Geobrugg Kanmantoo Copper Mine 2019 - Geobrugg
Kanmantoo Copper Mine 2019 - Geobrugg Kanmantoo Copper Mine 2019 - Geobrugg
Kanmantoo Copper Mine 2019 - Geobrugg Kanmantoo Copper Mine 2019 - Geobrugg
Kanmantoo Copper Mine 2019 - Geobrugg Kanmantoo Copper Mine 2019 - Geobrugg

Kanmantoo Copper Mine

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Place
Kanmantoo
Country/Region
Australia
Year of installation
2019
Customer
Hillgrove Resources
Engineering
Geobrugg Australia Pty Ltd
Contractor
RW Solutions
Protected object
Quarry / Mine, Infrastructure
Systems
TECCO® G65/4, SPIDER®, DELTAX® G80/2, T35, DELTAX®, RXE-3000, MINAX® 80/3, Rockfall drape, ATTENUATOR
Energy absorption capacity
3000 kJ, 35 kJ
System height
4.5 m, 5.0 m, 5.5 m, 6.0 m, 6.5 m, 7.0 m
Corrosion protection
Galvanized, GEOBRUGG SUPERCOATING®, GEOBRUGG ULTRACOATING®
Other installed applications
Rockfall Protection, Slope Protection, Debris Flow & Shallow Landslide Protection, Underground/Open Pit Mining and Quarries
Initial situation

The Kanmantoo Copper Mine in the Adelaide Hills of South Australia is operated by Hillgrove Resources Pty Ltd. Underground Cornish style mining occurred in the area in the mid1800’s. The first open pit became operational in the 1970s, and then more recently the mine was reopened in 2011. Since then Geobrugg has worked closely with Hillgrove Resources, by designing and supplying a range of systems.

Two smaller pits (Kavanagh and Spitfire) were operational from 2011 to 2015, before amalgamating into one. The result, The Giant Pit, is to be completed in mid-2019.
Its steep-walled design requires an intensive rockfall management plan and the installation of extensive rock support. The pit has two main competent rock types; biotite Schist (BSch), and garnet andalusite biotite schist (GABS). There are no major faults and few shear zones, so the stability of the pit is defined by four main joint sets. Two steep easterly dipping structures result in planar and wedge failure modes, mainly on the western walls.

Description

Geobrugg has worked closely with the mine and the installation contractor to manage a range of rockfall hazards. To date, approximately 45,000m² of DELTAX®, MINAX®, and TECCO® drape mesh have been installed, along with over 1000 lm of low (35 kJ) and high energy (3000 kJ) rockfall barriers, and 300 lm of attenuators.

Pre-splitting of batters, mechanical scaling and hydro-washing are used to reduce and eliminate the potential for general, smaller rockfalls. General weathering, rainfall, and blasting have still lead to rockfall events, so engineered structures such as rockfall drapes and low energy barriers (T35) are installed to manage these in selected areas.

Large scale wall failure is managed by a slope stability radar and three laser scanners. Due to the potential for rapid, brittle type failures and orientation, batter instability is difficult to predict and alarm with radar and scanners. Hence this risk has been managed through berm retention (using shear pins), and high energy rockfall barriers. In areas where berm loss has still occurred, Attenuators are installed to mitigate the additional rockfall risk.

Mining operations will cease in May 2019 when the pit will then be redeveloped into a pumped hydro project.

Our video shows all solutions at Kanmantoo Copper Mine.

Your local contact

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / USA
Phone +1 860 377 3230

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Saleh Feidi
Saleh Feidi
Regional Manager California
Natural Hazards
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / USA
Phone +1 909 706 8964

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John Kalejta
John Kalejta
Regional Manager Central US
Natural Hazards
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / USA
Phone +1 505 220 1404

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Bob Lyne
Bob Lyne
Regional Manager Southeast
Natural Hazards
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / USA
Phone +1 336 337 0945

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Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Phone +1 505 771 4080
Mobile +1 505 400 0796

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Tim Shevlin
Tim Shevlin
Sales Director
Natural Hazards
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / USA
Phone +1 503 423 7258

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