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Minerit / Tuneluri - Kanmantoo Copper Mine 2019

West Wall during barrier construction, June 2018. Note the multiple levels of rockfall barriers and attenuators above.

Minerit / Tuneluri - Kanmantoo Copper Mine 2019

North Wall of the Giant Pit in 2016. This was later draped with DELTAX® G80/2.

Minerit / Tuneluri - Kanmantoo Copper Mine 2019

RXE-3000 barrier built in October 2016.

Minerit / Tuneluri - Kanmantoo Copper Mine 2019

Haul Ramp running underneath ATTENUATOR.

Minerit / Tuneluri - Kanmantoo Copper Mine 2019

Building RXE-3000 barrier in June 2018.

Minerit / Tuneluri - Kanmantoo Copper Mine 2019

Aerial view of West Wall, September 2018. Note the wedge and planar failures as well as different levels of rockfall barriers and attenuators.

Minerit / Tuneluri - Kanmantoo Copper Mine 2019

Haul Ramp running underneath ATTENUATOR. Note the 560 t block above stabilised with SPIDER® S4-130 (video: 1.00 min.)

Minerit / Tuneluri - Kanmantoo Copper Mine 2019

North Wall September 2018, covered in DELTAX® G80/2.

Minerit / Tuneluri - Kanmantoo Copper Mine 2019

One of the West Wall rockfall ATTENUATORS, September 2018.

Situația inițială

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.

Descriere

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.

Client

Hillgrove Resources

Antreprenor

RW Solutions

Obiect protejat

Carieră / Mina, Infrastructură

Protecţie împotriva coroziunii

Galvanized, GEOBRUGG SUPERCOATING, GEOBRUGG ULTRACOATING

Tehnologie

Geobrugg Australia Pty Ltd

Alte aplicaţii instalate

Protecţia împotriva căderilor de pietre, Stabilizarea pantelor, Protecţia împotriva torenţilor şi a alunecărilor superficiale, Minerit / Tuneluri

Contactul dvs. local

Roger Moor
   

Roger Moor

Country Manager Ost- und Zentralschweiz, Liechtenstein

Natural Hazards
Inginerie hidraulică
Minerit / Tuneluri
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Elveţia Country Manager Ost- und Zentralschweiz, Liechtenstein

E-mail

René Müller
   

René Müller

Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

Natural Hazards
Inginerie hidraulică
Minerit / Tuneluri
Geobrugg AG,Industriestrasse 21,5200 Brugg / Elveţia Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS

E-mail

Alexander Bittendorfer
   

Alexander Bittendorfer

Project Manager Inspection Services

Natural Hazards
Geobrugg AG,Aachstrasse 11,8590 Romanshorn / Elveţia Project Manager Inspection Services

E-mail

Isacco Toffoletto
   

Isacco Toffoletto

Ticino Country Manager

Natural Hazards
Inginerie hidraulică
Minerit / Tuneluri
Geobrugg AG Ticino,Stabile Cometal, via Pizzante 7,6595 Riazzino / Elveţia Ticino Country Manager

E-mail