In Jingshandian Iron-ore Mine, the second caving of the deep rock masses reaches the ground surface above the centre of the mined-out area, and then causes the ground collapse; under the combined effect of the underground mining in Jinshandian Iron-ore Mine and the remaining private mined-out areas, large-scale ground surface collapses and ...
broken ore is removed, the capping or non-mineral bearing rock above the ore will gradually crack all the way to the surface, and large subsidence
The use of block caving to mine ores and rocks of kimberlite deposits in Yakutia (Udachnaya, Yubileynaya Mir pipes) will ensure high economic efficiency and productivity, reduce damage to diamond ...
Block cave fragmentation has been documented in the literature to have a significant impact on mine design, performance and downstream material handling and comminution processes. …
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 …
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 SLC level and …
Utilising a ground support design methodology is an important part of designing ground support. This paper describes the application of the ground support and reinforcement …
Block-caving copper mining methods and costs at the Miami mine, Miami Copper Company, Gila County, Arizona (1965) Hardwick, W. R. U.S. Dept. of the Interior, Bureau of Mines PDF Empirical investigation and characterization of surface subsidence related to block cave mining (2013) Woo et al. International Journal of Rock Mechanics & Mining ...
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 …
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. (Dunstan & Popa 2012; Manca & Flores 2013 ...
Block Caving is an underground mining method in which high productivity and low operational costs are expected when applied to thick low-grade ore bodies. 1, 2 Using this process, the broken ore is extracted from the bottom of the ore body after the initial undercutting. The undercutting induces progressive rock mass caving due to stress redistribution and gravity.
O método Block Caving envolve o desabamento controlado de grandes blocos de rocha por seu próprio peso através de fissuras e fraturas. Isso requer rochas com facilidade de fragmentação em profundidades entre 600-1200m. O método possui altas taxas de produtividade e baixos custos, mas também riscos de subsidência e diluição do minério.
Download Free PDF. Download Free PDF ... consists of the transformation of the Chuquicamata historical open pit to a large-scale underground block caving mine that considers the profitable extraction of 1,760 Mt of ore consisting of 0.7% of copper and 512 ppm of molybdenum at a mining rate of 140,000 tpd, achieved after seven years of ramp-up ...
Cave mining techniques, including block caving and sublevel caving, are being employed in various mines around the world. ... Block Caving Chengchao Iron Mine Wuhan Iron & Steel Company Unknown SLC Chuquicamata Codelco ... Ridgeway Deeps Newcrest C&M Block Caving San Manuel BHP Closed ...
Block caving Numerical modeling Joint characteristics UDEC software Response surface methodology 1. Introduction ... Studies by Beck [6] at the Ridgeway Deeps Mine in Australia have shown that sometimes caving initiations may not occur on part of the undercut area. Carlson and Golden (2008) [7] at the Hendeson mine observed a situation ...
Full-scale marker experiments at Cadia Valley underground operations have been ongoing for over 14 years. Initial marker experiments were undertaken in the Ridgeway …
Carlson et al. (2008) [5] Estimation of caving propagation rates at Henderson mine, Colorado, USA. Beck et al. (2011) [6] Estimation of caving propagation rates at ridgeway deeps mine, Australia. Someehneshin et al. (2015) [7] Determination of the optimal block size in the block caving method by the analytical method. Empirical King (1945) [8]
Hudyma and Potvin (2008) addressed differences in seismicity and seismic source parameters for a major geological feature, which was activated by the caving of the stope at the Ridgeway gold mine ...
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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 ...
Abstract Cave mining methods (generically referred to as block caving) are becoming the preferred mass underground mining options for large, regularly shaped mineral deposits that are too deep to ...
This information is taken from "Block Caving," a summary prepared by David Chambers, Ph.D., Center for Science in Public Participation, Bozeman, MT, March 2008 Available
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This paper outlines a process for the selection of material sizing and dewatering systems for large-scale caving operations. This process is illustrated with information drawn from …
The Newcrest board approved development of the Ridgeway Deeps block cave in June 2007. The Ridgeway Deeps block cave project involved development of resources below the Ridgeway Underground mine at a depth of 300m to about 1,100m. It is the first natural caving operation and the deepest block cave in Australia.
ridgeway deeps mine block caving pdf celineroyfr. Initial marker experiments were undertaken in the Ridgeway sublevel cave (RW) (2002), and subsequently at Ridgeway Deeps (RWD) (2008) and Cadia East PC1 (CEPC1) (2012) block caves Over 25 000 markers have been installed at the three caving operations to date (approximately 20 000, 3000 and 2500 ...
Report number: MOL Research Report Two 2009/2010, Mining Optimization Laboratory, September 2010, Paper 108, pp. 116-133 (ISBN: 978-1-55195-280-2)
The Ridgeway gold mine has been an enigma of the international underground hard rock community for nearly 20 years. It nearly didn't eventuate as it was more than 500 m below a farmer's paddock in Central New South Wales when the exploration team, looking for open pit deposits, got a sniff on its last attempt and then drilled the high-grade discovery hole. It took …
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 and far field …
Block cave fragmentation has been documented in the literature to have a significant impact on mine design, performance and downstream material handling and comminution processes. ... Fragmentation prediction and assessment at the Ridgeway Deeps and Cadia East cave operations, in Proceedings Seventh International Conference and Exhibition on ...