Block Caving Instead of Open

Primary fragmentation: In situ block size Secondary: • Extension of pre-existing discontinuities • Opening of filled and healed discontinuities • Opening along bedding or schistocity planes • Crushing under superimposed weight • Failure of blocks under arching stress • Abrasion of block corners

Block Caving: Mining Specialization E & MJ

Block caving offers the potential for high-volume, low-cost production usually, although not always, from low-grade deposits that could not be mined profitably by other methods. the system is fully automated with real-time draw control and transport from the drawpoints to primary crushing units. Speaking at ExpoMin 2012, the head of the

Inside block caving: the deep mining method of the future

Feb 14, 2020 The role of block caving Although the caving mining system was initially used for shallow orebodies, it has recently been applied at depths of 2km underground. According to Suorineni, “caving heights have also increased drastically from about 200m to 500m”, creating so-called ‘super caves’.“There is insufficient experience caving in these environments,” he adds, which is a

Block Caving groundtruthtrekking

Block caving is an underground hard rock mining method that involves undermining an ore body, allowing it to progressively collapse under its own weight. It is the underground version of open pit mining. In block caving, a large section of rock is undercut, creating an artificial cavern that fills with its own rubble as it collapses.

Keeping up with caving REDPATH MINING

BLOCK ANd pANeL CAVING Block caving is an underground mining method that uses gravity to exploit massive, steeply dipping orebodies located at depth, particularly those with disseminated mineralisation or that are low-grade in nature, but too deep to be extracted using open pit methods. Block caving also depends on insitu stresses and

Block caving: A new mining method arises Geoengineer

Jul 25, 2018 Block caving is a new alternative method of developing new mines or extending the operation of open pits. Block caving is an underground hard rock mining method that involves undermining an ore body, allowing it to progressively collapse under its own weight. It is the underground version of open pit mining.

Underground mining (hard rock) Wikipedia

Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubies. Soft rock mining refers to excavation of softer minerals such as salt, coal

Block Caving Instead of Open

Primary fragmentation: In situ block size Secondary: • Extension of pre-existing discontinuities • Opening of filled and healed discontinuities • Opening along bedding or schistocity planes • Crushing under superimposed weight • Failure of blocks under arching stress • Abrasion of block corners

Block caving QueensMineDesignWiki

Block caving is an underground mining method that uses gravity to exploit massive, steeply dipping ore bodies located at depth. These ore bodies are generally low grade in nature and are too deep to be extracted through open pit mining.

Major Mines & Projects Grasberg Block Cave Mine

Crushing and grinding transform ore size into fine sand in order to release particles containing copper and gold. Flotation is a separation process to produce copper-gold concentrate. Concentrate slurry consisting of finely ground ore and water mixed with reagents is introduced into a series of mixing tanks called flotation cells, where air is

How to build a mine Resource World Magazine

The crushing and processing facility is constructed based on the testing, flow sheet and design determined in the FS. Processing of the ore starts with understanding the mineralogy, then metallurgical testing for crushing, grinding and recovery of the metals and treatment/management of the tailings.

Design & Operating Principles in Caving Methods

Block Caving Design parameters (Laubscher, 2001) 41 Production Requirmnts Cavability Primary Fragment. Drift spacing Drawpoint interaction Draw zone spacing/pillar Drilling & blasting Hauling Crushing Layout Logistics Excavation stability Method of Draw Draw heights Sequence rate of draw

KB 63-130 Archives International Mining

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”.

Argyle Diamond Mine, Kimberley Mining Technology

Macmahon Holding was the primary mining contractor at Argyle Diamond mining site. Work resumed in September 2009. Underground mining involved development of 30km of block cave mining, excavation of two underground crusher chambers, vertical development and initial cave draw protection.

Australian Centre for Geomechanics Conference Paper

Brzovic, A & Villaescusa, E 2007, ‘Rock mass characterization and assessment of block‐forming geological discontinuities during caving of primary copper ore at the El Teniente mine, Chile’, International Journal of Rock Mechanics and Mining Sciences, vol. 44, no. 4, pp. 565–583.

Mining methods SlideShare

Oct 23, 2011 Mining methods 1. Mining methods for s teeply dipping and massive deposits 2. Mining methods for s teeply dipping and massive deposits Self supported methods Sublevel caving Block caving Induced Block Caving Sublevel stoping Undercut and fill stoping Square-set stoping Cut-and-fill stoping Shrinkage stoping With caving of overburden Without caving of overburden Supported

A Comminution Model for Secondary Fragmentation Assessment

Jul 03, 2017 Predicting the rock fragmentation obtained in drawpoints or secondary fragmentation is crucial in Block caving application since many engineering decisions are based on this key variable. These can include drawpoints size and spacing, equipment selection; draw control procedures, production rates, dilution entry and operational blasting requirements. Secondary fragmentation

18 AUGUST 2014 ASX Release OZ Minerals

Aug 18, 2014 The selected mining method for Carrapateena is block caving. The orebody will be mined in two lifts of approximately 500 met res each, with primary crushing underground and ore delivery to the plant via conveyor (Figure 2). A mining rate of 12.4 million tonnes per annum is envisaged for the life of the mine after a three year ramp up period.

New Gold Inc. Assets New Afton

New Afton Block Caving Video The mine is designed to process 11,000 tpd (4 Mtpa) of ore at full capacity, recovering copper, gold, and silver. The mill processes a blend of primary, transition and supergene ores using conventional crushing, grinding, and concentration processes.

Rob Cunningham, Mining Operations Manager, Northparkes Mines

The mine uses a combination of block caving and sub-level caving mining methods to process 6.5 million tons per annum of ore. With a vision of being a technological leader within the industry, Northparkes was keen to trial and implement a pre-charging blasting program into the sub-level cave part of the operation using Orica’s WebGen™ 100

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18 AUGUST 2014 ASX Release OZ Minerals

Aug 18, 2014 The selected mining method for Carrapateena is block caving. The orebody will be mined in two lifts of approximately 500 met res each, with primary crushing underground and ore delivery to the plant via conveyor (Figure 2). A mining rate of 12.4 million tonnes per annum is envisaged for the life of the mine after a three year ramp up period.

Block Caving Instead of Open

Primary fragmentation: In situ block size Secondary: • Extension of pre-existing discontinuities • Opening of filled and healed discontinuities • Opening along bedding or schistocity planes • Crushing under superimposed weight • Failure of blocks under arching stress • Abrasion of block corners

Major Mines & Projects Grasberg Block Cave Mine

Crushing and grinding transform ore size into fine sand in order to release particles containing copper and gold. Flotation is a separation process to produce copper-gold concentrate. Concentrate slurry consisting of finely ground ore and water mixed with reagents is introduced into a series of mixing tanks called flotation cells, where air is

(PDF) Open pit or block caving? A numerical ranking method

A switch from open pit mining to block caving mining could be another great development in this century. transport and Primary crushing equipment has significant effect on the economic

Australian Centre for Geomechanics Conference Paper

Brzovic, A & Villaescusa, E 2007, ‘Rock mass characterization and assessment of block‐forming geological discontinuities during caving of primary copper ore at the El Teniente mine, Chile’, International Journal of Rock Mechanics and Mining Sciences, vol. 44, no. 4, pp. 565–583.

New Gold Inc. Assets New Afton

New Afton Block Caving Video The mine is designed to process 11,000 tpd (4 Mtpa) of ore at full capacity, recovering copper, gold, and silver. The mill processes a blend of primary, transition and supergene ores using conventional crushing, grinding, and concentration processes.

Mining methods SlideShare

Oct 23, 2011 Mining methods 1. Mining methods for s teeply dipping and massive deposits 2. Mining methods for s teeply dipping and massive deposits Self supported methods Sublevel caving Block caving Induced Block Caving Sublevel stoping Undercut and fill stoping Square-set stoping Cut-and-fill stoping Shrinkage stoping With caving of overburden Without caving of overburden Supported

A Comminution Model for Secondary Fragmentation Assessment

Jul 03, 2017 Predicting the rock fragmentation obtained in drawpoints or secondary fragmentation is crucial in Block caving application since many engineering decisions are based on this key variable. These can include drawpoints size and spacing, equipment selection; draw control procedures, production rates, dilution entry and operational blasting requirements. Secondary fragmentation

ASX Release OZ Minerals

Nov 28, 2013 Estimated total operating costs, inclusive of mining, processing and site G&A, for block caving are A$23 per tonne. This corresponds to a cut -off grade of approximately 0.3 percent Cu. Within the Mineral Resource there is a sufficient volume of contiguous mineralisation above a cut-off grade of 0.3 percent Cu to support a block cave mine.

Lecture 4: Underground Mining

Nov 02, 2011 9.2) Block Caving Block-caving method is employed generally for steeply dipping ores, and thick sub- horizontal seams of ore. The method has application, for example in sulfide deposits and underground kimberlite (diamond) mining. It is most applicable to :- o A large-scale or bulk mining method that is highly productive, low in cost, and used

Rob Cunningham, Mining Operations Manager, Northparkes Mines

The mine uses a combination of block caving and sub-level caving mining methods to process 6.5 million tons per annum of ore. With a vision of being a technological leader within the industry, Northparkes was keen to trial and implement a pre-charging blasting program into the sub-level cave part of the operation using Orica’s WebGen™ 100

Etsy Shop for handmade, vintage, custom, and unique

Required Cookies & Technologies. Some of the technologies we use are necessary for critical functions like security and site integrity, account authentication, security and privacy preferences, internal site usage and maintenance data, and to make the site work correctly for browsing and transactions.

Underground Mining Article about Underground Mining by

The spontaneous block-caving system is characterized by gradual spontaneous caving of the ore within the working section and its subsequent removal below the caved rocks. The block is from 60 to 120–150 m high and the cutting area varies from 900 to 2,500 m 2, depending on the physicomechanical properties of the ore and the rock pressure. To

COAL MINE

Open bench mining, Sub-level caving, Mechanised block caving, Conventional block caving, Vertical crater retreat, Mechanised fissure mining, etc. Content: Feed preparation plant, Primary scrubbing, screening and de-gritting plant, DMS plant, and Flocculant plant. Vertical shaft infrastructure,