Chuquicamata underground mine design: the simplification of the …

Abstract: The ore handling system layout plays a fundamental role in cave mining projects, not only because it is one of the main drivers in the production capacity and reliability of the mining system, but also because it is a fundamental variable in the footprint's development time and cost (Paredes et al. 2016). In terms of ore handling system definition, the governing paradigm in …

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CMOC-Northparkes says new Lift 1 North copper block cave …

E26L1N is a block cave extension, mining the porphyries to the north of the E26L1 and E26L2 caves. Northparkes is known as an innovative operation – it was the first in Australia to use u nderground block caving, starting in October 1993 with the construction of the E26 underground block cave mine. In 2015, Northparkes also became one of the ...

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An overview of block caving operation and available …

Block caving technique is a mass mining method in which gravity is used in combination with internal rock stresses to fracture and break the rock mass into pieces that can be handled by miners ...

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AngloGold Ashanti confirms caving plans in Colombia

The Massmin 2020 crowd got a glimpse of just what will be required to build Colombia's first underground caving mine during a presentation from AngloGold Ashanti's Lammie Nienaber this week.. Nienaber, Manager of …

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Development of and production update for the Grasberg Block Cave mine

The block caving mining method has become increasingly popular in the last two decades. Meanwhile, Indonesia has several potential ore bodies which have not yet determined suitable mining methods ...

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Australian Centre for Geomechanics | Caving 2022

Authors Title Year; Hanrahan, S: Setting it up for success: considerations for caving projects Caving 2022: Proceedings of the Fifth International Conference on Block and Sublevel Caving, Caving 2022: 2022: Campbell, R: Risk, lessons and opportunities: a unified knowledge management approach for mass mining Caving 2022: Proceedings of the Fifth International …

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THE STORY OF THE BAGDAD MINE

ore to the caving glory-hole. Later in 1945, the company made a complete switch from block caving to open pit mining with truck haulage. By early 1947, a pit crusher system, glory-hole orebin, and conveyor system to carry crushed ore from the pit to the mill had been installed.

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A transition from a large open pit into a novel "macroblock variant

Lift 1 layout showing 20 macroblocks and crusher locations. The strategy is to initiate production from macroblocks N1 and S1 located in the centre of Lift 1. ... mine design and planning and operations of block/panel caving and large open pit mines and projects in Chile and Australia. He graduated as the mining engineer from the Santiago ...

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(PDF) Oyu Tolgoi: A New Era for Mongolian Mining

628 Caving 2022, Adelaide, Australia Plenary session three The focus of lateral development progressively switched to development of the block cave mine footprint; the apex, undercut, extraction and haulage levels whilst construction focus switched to construction of material handling system 1 (MHS1) – comprising Primary Crusher 1 and ...

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Application of rock mass strength scale effect at Cadia East mine

Cave mining methods allow for the bulk extraction of large, low grade orebodies in a cost effective manner. The fundamental mechanics of caving involves the self-propagating yield (failure) of an ...

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Australian Centre for Geomechanics | Conference Paper: …

The PC2 crusher chamber is a large excavation located at a depth of 1,300 m, with a stand-off distance of 280 m from the Panel 2 footprint. This paper describes the geomechanical …

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Interaction between the block cave and the pit slopes at …

Interaction between the block cave and the pit slopes at Palabora mine Overview Project description and history The Palabora Mining Company (PMC) was founded in 1956 and open pit mining operations commenced in 1966 at rate of 30 000 tpd increasing to 82 000 tpd prior to closure in 2002. In total some 960 Mt of ore and 1 300 Mt of waste were mined.

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Portable Rock Crushers

Mining plans relying on drilling and blasting for fragmentation control will, no doubt, show greater uniformity in size of oversize, but great variations are to be expected in the size distribution of ROM ore from mine to mine. Assuming a successful crusher can avoid direct attack of the three-to-five font major fragment dimension indicated in ...

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Productivity of a Continuous Mining System for Block Caving Mines

The RFCMS chains a group of feeders, a heavyweight conveyor, and a primary crusher. Early crushing of the mineral was introduced to avoid grizzlies on ore passes and to allow proper operation on conveyors belts. Each feeder extracts ore from the draw points, which feeds the conveyor equipped with a primary crusher. ... Block caving mining is ...

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Keeping up with caving

48 BLOCK CAVING block caving comes down to two factors – less access to large orebodies near the surface and an improvement in the knowledge of caving mining methods. "It is becoming increasingly difficult to find large, near-surface orebodies that are suitable for open pit mining methods which will also yield high production rates

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Australian Centre for Geomechanics | Conference Paper: …

Abstract: Oyu Tolgoi (OT), in the South Gobi region of Mongolia, is one of the largest known copper and gold deposits in the world. At peak production, Oyu Tolgoi is expected to produce 500,000 tonnes per annum of copper. The Panel 2 (PC2) crusher is a key component of the OT underground ore handling system, which has a total capacity of 95 ktpd; the PC2 crusher …

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9.4.2c Longwall Mining | MNG 230: Introduction to Mining …

Longwall Mining of Coal. Longwall mining of coal is a high production and high productivity method, employing sophisticated electrical, mechanical, and hydraulic systems, as well as computer-based monitoring and control systems. Most modern (coal) longwall faces are semi-automated. It is noteworthy that longwall operations in trona mines utilize essentially the same …

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Geomechanical Design for the World's Largest Underground Mine

The Chuquicamata underground mine in the Atacama Desert in northern Chile is one of the largest planned mining projects in the world to use block caving with macro-blocks option to mine copper ore. ... and the stability and support design of crusher chambers, transfer caverns and several large excavations. ...

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Underground Infrastructure Requirements for Underground Cave Mining

With more underground developments considering or implementing caving methods of mining, the selection of the material sizing systems is also influenced by the caving fragmentation. Traditionally, crusher systems are used for material sizing in large hard rock mines, with the crusher installation and its ancillary equipment representing a ...

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(PDF) Geotechnical analysis and ground support selection for the …

The New Level Mine is a 130.000 tpd panel caving project set to start in 2017 at the El Teniente mine. ... J 2000, 'Excavation design and ground support of the gyratory crusher installation at the ...

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The Block Cave Mining Method

Block caving is a large-scale underground mining method applicable to the extraction of low-grade, massive ore bodies. With the amount of literature available on block …

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9.4.2a Block Caving | MNG 230: Introduction to Mining Engineering

The crusher breaks it down into smaller pieces, which are then loaded onto a conveyor. Transported to an ore skip and hoisted, via the vertical shaft, to the surface to be processed to the mill. The block cave ultimately breaks through to the surface and a subsidence zone is formed.

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Glenn Sharrock ITASCA Australia

Glenn Sharrock — ITASCA Australia 28/06/2024 2 Brunton, I., Sharrock, G.B. (2012) 'Full scale marker trials at Ridgeway deeps block cave mine' Proc. Massmin 2012 Conference, Sudbury. Tibbett, J.., Sharrock, G.B., Hebblewhite, B.K. (2012) 'A review on the effects of faults on the mechanics of cave propagation', Proc. Massmin 2012 Conference, Sudbury.

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Major Mines & Projects | Carrapateena Mine

The successful commissioning and ramp up of Crusher 2 in Q3 FY2024 led to record material mined and concentrate produced. As a part of Carrapateena Expansion, the bottom half of the Carrapateena orebody is being developed into a block cave, with the aim of unlocking the mine's potential to be a multigenerational, low quartile cash cost ...

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Chuquicamata underground mine design: the simplification of …

mining system design for current supercaves can be classified into two types: (1) LHDs tipping directly into orepasses inside (below) the footprint, and (2) LHDs tipping directly into crusher …

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Development of and production update for the Grasberg Block Cave mine

Abstract: This paper provides an update of the mine design, construction, caving progress and operations status of the Grasberg Block Cave (GBC) mine. Undercutting was initiated in September 2018 and drawbelling in December 2018. Undercutting is currently proceeding in three production blocks. ... The first phase of the crusher/conveyor system ...

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Development of and production update for the Grasberg …

Ore is transported via diesel-powered LHDs to a series of ore passes, then via loading chutes to a rail haulage system, which delivers the ore to a three-gyratory crusher complex. Crushed ore …

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Major Mines & Projects | Cadia East Mine

Mining Method: Panel caving; Block caving; Production Start... Snapshot: Cadia East mine is a part of the Cadia Valley Operations and is one of the largest gold and copper deposits in the world, and the second largest gold mine in Australia. Today, Cadia operations are principally focused on the Cadia East deposit. As the ore reserves in the ...

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thyssenkrupp and Northparkes collaborate on

Northparkes was the first mine to use the standard indirect fed Jaw Gyratory crusher type BK 63-75 for its newly developed block caving mine concept, thyssenkrupp said, with this primary crusher design becoming the "state of the art solution for block caving mines".

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4.3.2: Underground Mining Methods | MNG 230: Introduction to …

Underground mining methods become necessary when the stripping ratio becomes uneconomical, or occasionally when the surface use of the land would prohibit surface mining. …

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