Rock fragment size is a key variable in several mining stages such as underground mine design, equipment selection, and mineral processing. In Block Caving, rock fragment sizes are affected by fragmentation during gravity flow in the ore column while ore is being extracted from drawpoints. Additionally, smaller fragments can …
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The back analysis of Newcrest Mining Limited's Ridgeway Deeps operation using the BCMSV enabled the phenomenon of pulses in the rate of seismic activity to be identified in the active region of ...
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Report number: MOL Research Report Two 2009/2010, Mining Optimization Laboratory, September 2010, Paper 108, pp. 116-133 (ISBN: 978-1-55195-280-2)
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PDF. Full scale marker experiments were designed and implemented at the Ridgeway Deeps block cave mine from March 2008 to October 2010. The experiments aimed at …
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Over the last 20 years Newcrest has developed unique capabilities within the caving industry to efficiently mine deep and low-grade deposits, transitioning from Sublevel Caving in Ridgeway and Telfer during the early 2000's and more recently to Block Caving at Ridgeway Deeps, Cadia East PC-1 and PC-2.
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In block caving mines with high economic columns, such as the North Parkes mine, the Grasberg Deep Ore Zone and the Deep Mill Level Zone mines, the Palabora mine, and the Cadia East mine [38, 39 ...
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Microseismic monitoring was performed as part of the hydraulic fracturing programme at Ridgeway Deeps Block Cave. The seismic data that are recorded during a typical fracture session have been ...
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1 Introduction Block caving is a mining method which has been increasingly implemented in recent times due to its cost eficiency and high production rates. The lack of access to the orebody, which is characteristic of the block caving method, results in a poor knowledge of the state of the rock mass inside the ore column.
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These experiments aimed to quantify and assess the geometry of the extraction zone, development of the extraction zone over time, variability of flow behaviour and factors …
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Automata-Discontinuum Finite Element models to simulate propagation of Ridgeway Deeps Block Cave', Proc. Massmin 2012 Conference, Sudbury. Brunton, I., Sharrock, G.B. (2012) 'Full scale marker trials at Ridgeway deeps block cave mine' Proc. Massmin 2012 Conference, Sudbury.
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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. The …
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2001) is widely accepted in industry and is the framework within which most monitoring and numerical modelling results in caving mines are interpreted. The Duplancic model was created based primarily on simple microseismic analysis and linear elastic numerical modelling of one case study. At the time, it provided a much-needed …
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Full Scale Near Field Flow Behaviour at the Ridgeway Deeps Block Cave Mine - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Full scale marker …
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Cave mining progresses to depths exceeding 1000 m and ore bodies situated in competent and strong rock masses are nowadays extracted by different cave mining methods. Widely applied caving methods in massive deposits are block and panel caving, inclined caving, and sublevel caving. All caving methods have in common that …
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The mine uses block caving for the extraction of the orebody. This paper enumerates the drawpoint loading strategies for the overall head grade improvements, particularly for a block that is ...
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at Ridgeway Deeps Block Cave Mine," in Caving 2010 (Proceedings, Second International Symposium on Block and Sublevel Caving, Perth, Australia, April 2010), pp. 93-106, Y. Potvin, Ed. Perth: Australian Centre for Geomechanics. 2010. Mosse-Robinson, S., and G.B. Sharrock. "Laboratory Experiments to Quantify the Pull-out Strength of Single
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Panel caving; Production Start: 1998: Mine Life: 2057: Snapshot: Cadia is one of the world's largest gold and copper mining operations. ... The Ridgeway Deeps Lift 1 block cave operation was mined between 2007 and 2015 and was Newcrest's first block cave operation. The change to block caving was introduced after the identification that the ...
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mine design. 2 Methodology This section describes the methodologies used to evaluate four production level layouts that can be used in block caving. The base case considered to define the input parameters is a Chilean copper mine, where the El Teniente layout is used, with production drifts oriented N15°W of 4.2 × 3.9 m2 spaced 30 × 17.3 m2 ...
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Deep Ore Zone (DOZ) Mine is an underground mine with block caving method within The East Erstberg Skarn System (EESS) deposit. Safe ground condition is the most important thing on production stage ...
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Full scale marker experiments were designed and implemented at the Ridgeway Deeps block cave mine from March 2008 to October 2010. The experiments aimed at quantifying and assessing the geometry of the extraction zone, development of the extraction zone over time, variability of flow behaviour, and factors affecting flow behaviour in both the near …
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Block Caving mine in Chile (El Teniente) had included in our first manuscript, while the Lvivvuhillia SE Mine (Ukraine) and the 10th Anniversary of Kazakhstan's Independence Mine (Kazakhstan) had not included. ... As quantitative values for comparison, Ridgeway Deeps has 0.38% Cu and 1.80 g/t Au [83]. While El-Teniente ore body has 0.62-0.98% ...
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The block cave forms the continuation of the existing Ridgeway sublevel cave (SLC) operation that has been actively mined since 2000. The sublevel cave commenced at a …
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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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Abstract. Cadia Valley Operations (Cadia) embarked on a path of cave mining in the early 2000s with the establishment of the Ridgeway sublevel cave. The success of that mine …
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This paper summarises the key elements of geotechnical knowledge and its input into the mine planning for the future of Cadia Valley Operations. Cadia Valley …
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A traditional block caving mine considers the development of an undercut level that allows blocky or veined rock masses to fracture, fail, and unravel when the undercut area is large enough. Once caving initiates, the rock mass progressively fails when induced stresses overcome the rock mass strength and when fractured rock …
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Touted as the deep mining method of the future, block caving is an underground mass-mining method that allows for the bulk extraction of large, relatively lower-grade ore deposits that are vertical in orientation. ... Planview of extraction level of Block Caving mine. Colour represents draw point status. ...
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The use of block caving to mine deep, massive, low-grade ore bodies is gaining increasing attention from the mining industry given its merits in terms of safety, tonnage produced and costs that can match those of open-pit operations. However, the undercutting and bulk extraction of ore through caving (Kendorski, 1978; Brown, 2003), leads to the ...
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RIDGEWAY DEEPS & CADIA EAST. KSM PROPERTY. Cave Mines and Projects. EL TENIENTE. ANDINA. SALVADOR. SAN MANUEL. HENDERSON. ... Peru Cerro Verde Indonesia Cadia-Ridgeway Mine, New South Wales x USA Ajo, Arizona Indonesia Northparkes, New South Wales x ... Block Caving Cu-Au Porphyry Author: Jarek …
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With its production level at a depth of 1,050 m, Newcrest Mining developed Ridgeway Deeps beneath the existing sub-level caving mine. The transition took place in 2009, although as a 2012 analysis note from Credit Suisse suggested, the move here did not go completely to plan. "The caving rate and fragmentation is in line with modeled projections.
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Block caving mining method is one of the most viable and preferred mass underground mining methods for low grade orebody. However, in combined surface and underground mining, the breakthrough of an underground caving under an open pit may result in subsidence at the bottom of the pit. This can pose a serious threat for the …
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Ridgeway Deeps is a block cave (BC) located down dip of the operating Ridgeway sublevel cave (SLC) mine. The BC is located approximately 210 m vertically below the lowest …
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The success of that mine led to a significant expansion into block caving operations, first at Ridgeway Deeps, and then to the now established Cadia East operations. What makes Cadia unique is the high-stress, hard rock mining conditions combined with the ability to maximise investor returns through the use of very high lift heights at depths ...
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El Teniente Mine (Esmeralda), Chile 169% Millan and Brzovic (2013) Data obtained for Block 1 (Esmeralda Mine). Swell factor obtained based on broken ore density of 1.6 t/m3 and intact rock density of 2.7 t/m3. Ridgeway Deeps Mine, Australia 104–112% Sharrock et al. (2012) Data obtained over an 8 month period coinciding with the
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