Ridgeway Deeps Block Cave and Halo Sub-Level Cave and Cadia Hill Open Pit 8.5Mtpa block cave in steady state production, 200ktpa sub-level cave from start-up to steady state production, and 30Mtpa large open pit from steady state production to completion of final cut-back. In this context, block-caving methods represent the best alternative for mining the underlying massive, low-grade orebody, as these methods offer high production rates at a low cost (Araneda, 2015). The Chuquicamata Underground Mine Project (PMCHS) is located 15 km to the north of Calama in the Antofagasta Region of Chile.
Ridgeway copper production for 2012 was 32 kt, an increase of 6 kt on 2011 reflecting post-commissioning production at Ridgeway Deeps block cave beneath the original sub-level cave. Adjacent to the eastern edge of the Cadia Hill orebody is the Cadia East deposit which is a porphyry zone of gold-copper mineralisation, extending up to 2.5 km east
review of block caving shows that Newcrest's Cadia East panel cave operation is materially better designed and pre-conditioned than Ridgeway block cave. The shortcomings of Ridgeway are well understood and have been comprehensively addressed in the vastly improved Cadia East design. Figure 1: Caving is the lowest cost underground mining method
excavated using induced caving, hence the name sublevel caving (Cokayne, 1982). The present system of sublevel caving is highly mechanised; the ore is completely drilled and then blasted. The mine design and layout have evolved from small scale rings with sublevel intervals of 9m to large scale rings with sublevel intervals of up to 29m
El mtodo de explotacin Panel Caving o tambin llamado Hundimiento por Paneles, ya sea cualquiera de sus variantes (convencional, hundimiento previo, hundimiento avanzado o hundimiento avanzado al lmite) ocupa el mismo principio que el sistema de explotacin subterrnea Block Caving, puesto que es una variante de este. Consiste en la ejecucin de
Oct 25, 2017The loss and dilution of ore by sublevel caving mining method is influenced by gravity flow principles of caved granular materials (rocks). Gravity flow of broken rock (muck) in dipping narrow veins is complex. By combined use of dimensional analysis and similitude studies in physical modelling coupled with numerical simulation, this paper reports results of a study of gravity flow of muck in
The Cadia and Ridgeway goldmines of Newcrest Mining in western New South Wales are examples of successful block caving. Done well, block caving is a cost-effective way of extracting large volumes of ore in an underground setting. But, like many advances in science and technology a better understanding of block caving started in a trial and
Block Caving. Block caving is essentially the underground version of open-pit mining. It's the only underground mining method that can reach similar production rates to surface mining operations, up to over 100,000 tonnes per day. The method involves undermining an ore body, then allowing it to collapse under its own weight.
Deep Mining: Technology as the Pathway to Increased Safety and Productivity. Fidelis T Suorineni . MRMR and Block Caving . Caving depths . Depth range of RMR database . Drives Mine Productivity and Safety . School of Mining Engineering . Technology and Mine Productivity 0 . 1,000 . 2,000 .
77206519-Block-Caving.pdf. Block Caving. Block Caving. Royalty 1. Cobre 10. GDR INF 37959 R0 Estudio de Accesos. Argyle Finsch Palabora Palabora L2 Koffiefontein Cullinan Kimberley CARRAPATEENA Northparkes Northparkes II Cadia East Ridgeway Deeps. Que es el block caving? El minado por block Caving se basa en el principio de que, una vez
The Havilah Project (EL8936) consists of three granted tenement blocks with an area 102km2 (Figure 4). The project predominantly covers Silurian and Devonian sediments and volcanics of the Hill End Trough to the west of the Wiagdon Thrust/ Mudgee Fault. In the southern block of EL8936 there is a belt of Ordovician Sofala Volcanics.
Download PDF Document (18.39 ) NIOSHTIC2 Number: 10002615. The second was a magnetite ore mine in eastern Pennsylvania that used block caving mining techniques. A radio system was developed that provided two-way communications between trackless vehicles and roving personnel. The third was a deep silver mine in the cour d'Alene
Block Caving Sublevel Caving Reef Open pit Narrow Vein Selective Underground Bulk Underground Pressure oxidation Cyanide carbon in leach Large scale comminution Copper-gold flotation Processing Lihir, Telfer, Bonikro Telfer Gosowong Telfer Cadia. 8 Value add through technical innovation 2001-2011 Ridgeway Sublevel Cave 2009 - 2016 Ridgeway
Ridgeway Deepsmine Block Caving. Subsidncia por block caving em Ridgeway Mine, South Carolina. O mtodo A rocha entra em colapso, de forma controlada, pelo seu prprio peso. Baseado na gravidade combinado com as condies internas de stress da prpria rocha. O mtodo A perfurao e detonao mnima enquanto a produo mxima.
A deformation monitoring plan for extraction level drives at Ridgeway Deeps block cave mine.. 93 R.J. Lowther, Newcrest Mining Limited; and The University of New South Wales, Australia; G.W. Capes, Strategic considerations in block caving .. 231 R.J. Butcher and G. Smith, Barrick Gold of Australia Ltd, Australia A new mine planning
Newman et al.: A Review of Operations Research in Mine Planning 224 Interfaces 40(3), pp. 222–245, 2010 INFORMS Crater Ore Face Bench Bench height Overburden Ground surface Ramp Haulage rode Figure 1: The schematic illustrates an open-pit mine.
the new generation of block and panel caving operations or "super caves". Some remaining challenges in the four theme areas discussed are also identified. 1 Introduction Deep Mining 2012 is the sixth in a series of international seminars on deep and high stress mining which
Abstract. 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 of the cave column.
• For some mining methods such as sublevel caving, dilution may be higher than ore loss. For example, one mining company has an ore loss of 5.9 Mt per year. At the same time, its dilution is 6.8 Mt. Challenges • How to control caving in block caving mining? • How to predict caving/subsidence area? • How to improve fragmentation in mining?
Download PDF . Tweet. 5MB Sizes 5 Downloads 504 Views. Such a row is called a fan or a ring, which appears in different mining methods such as sublevel caving, block caving, and open stopping. Simultaneous initiation of two or more neighboring blastholes. In the Ridgeway mine, two middle holes would be first initiated at the same time
underground block caving operation. GEORGE FISHER MINE (QLD) Xstrata Macmahon was retained to undertake expansion works at the George Fisher Mine, with the scope encompassing all aspects of development, in addition to vertical development solutions of shaft sinking and the raiseboring of up to four shafts. Macmahon was