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There are a number of solutions developed for caving to design, model, evaluate block caving, and sub-level caving projects, including: • Location and footprint of the caving mine: Analytics and simulations can help determine caving method and extraction points can be designed carefully to cause excessive stress and damage.
Block caving is an important mining method for the future economic exploitation of large, low grade, steeply dipping orebodies. Block caving is not a new method, however, there are still many ...
This section is focused on block caving method. Block caving is a technique in which gravity is used in conjunction with internal rock stresses to fracture and break the rock mass into pieces that can be handled by miners. Block refers to the mining layout in which the ore-body is divided into large sections of several thousand square meters.
1.. IntroductionSublevel caving (SLC) is a mass mining method based upon the utilisation of gravity flow of blasted ore and caved waste rock [1].The method functions on the principle that ore is fragmented by blasting, while the overlying host rock fractures and caves under the action of mine-induced stresses and gravity [2].The caved waste from the overlying …
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 caving is achieved by undercutting the ore body and inducing gravity to drop the ore into collection points. Block (Gravity) Caving diagram showing the undercut, Grizzly and main haulage levels. Note the …
A Practical Manual on Block Caving. Download PDF. Date Published: October 2000. Authors: Dennis H. Laubscher. The Block Cave Manual has been built mainly around and/or influenced by the experiences of Dr Laubscher in …
In block caving, a large section of ore is initially undercut by drilling and blasting, creating a large unsupported roof that will start to collapse under its own weight and instability, The broken ore then breaks apart and falls into a series of pre-constructed funnels, or drawbells, and access tunnels developed underneath the caving rock ...
More and more mining companies are exploring block caving as it becomes increasingly difficult to find high quality orebodies close to the earth's surface. Why are companies moving from open pit operations to cave mining? Today, more than 50 cave mining projects, at various stages of development, are being explored around the world (Jakubec ...
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 …
The successful implementation of sublevel caving (SLC) at Ridgeway Gold Mine (Ridgeway) requires the technical aspects of caving and flow behaviour to be understood. Cave …
Vejrazka, C 2016, 'Northparkes Mines' current air blast risk assessment practices for block caving operations', Proceedings of MassMin 2016, The Australasian Institute of Mining and Metallurgy ...
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.
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 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. ... Diering and Nat Burgio from Strata-vision in Australia co …
Block and panel caving mines are increasingly being proposed for the excavation of massive ore-bodies located at depth. The lack of selectivity associated with the mining methods results in both ore and waste being caved and transported through material handling systems to the surface for processing and waste rock disposal. Sensor-based sorting systems provide an …
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 ...
A deformation monitoring plan for extraction level drives at Ridgeway Deeps block cave mine Caving 2010: Proceedings of the Second International Symposium on Block and Sublevel Caving, Caving 2010: ... Geomechanical evaluation of macro-block caving options using 3D numerical modelling at Chuquicamata underground project in Chile Caving 2010: ...
Introduction. 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 …
Block caving has garnered increased interest in recent years, especially as the number of new near surface deposits which can be mined by open pit methods continues to decrease. This has helped drive global interest in cost-effective underground mining methods like block caving which can be a viable alternative for consideration in mineral ...
Hudyma, M & Potvin, Y 2008, 'Characterizing caving induced seismicity at Ridgeway gold mine', Proceedings of MassMin 2008, Luleå University of Technology, Luleå, pp. 931–942.
Mining Limited's (Newcrest) Ridgeway Deeps block caving (RWD) operation. RWD is part of Newcrest's Cadia Valley operations which is located approximately 250 km west of Sydney in New South ...
Department of Industry 2017, Investigation Report – Report into the Death of Lee Peters at the Ridgeway Mine, Cadia, NSW on. ... V 2004, 'Preconditioning by hydraulic fracturing for block caving in a moderately stressed naturally fractured orebody', in A Karzulovic & M Alfaro (eds), Proceedings of MassMin 2004, Chilean Engineering ...
A combination of preconditioning by hydraulic fracturing and confined blasting referred to as intensive preconditioning was implemented at a major panel caving operation. The aim is to alter rock mass behaviour in a manner that could improve caving mechanics and extraction performance. A benchmark study involving data collected from operations in Chile, …
What and Why Block Caving? What : Block (gravity) caving is a bulk underground mining method, which allows large low-grade deposits to be mined underground. This method involves undermining the orebody to make it collapse under its own weight into a series of chambers from which the ore extracted. It is a useful technique to
Block Caving Process; Hazards and Side Effects; Block Caving and Pebble Mine; 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 …
into block caving flow and fragmentation design soft-ware such as PCBC (Personal Computer Block Cave; Diering 2000), REBOP (Rapid Emulator Based on PFC; Cundall et al. 2000), and BCF (Block Caving Fragmentation; Esterhuizen 2005). The implications of this can be significant. For example, PCBC is a widely used production planning and scheduling
Block caving is a mining ore mining method in which deep hole or medium-deep hole drilling blasting technology is applied for caving at one time in a stage. The layout of ore blocks and extracting technology are generally similar to that of sublevel caving method with sill pillar and external force of drilling blasting is required for caving ...
Newcrest has identified panel caving as likely to deliver the best technical and economic outcome. In October 2010, the company awarded a $20m contract to ABB to supply conveyor control systems for the six underground mines. The control system will comprise ACS 6000 multidrives and motors.
high risk method, large scale caving is almost exclusively accessible to large mining corporations. The need to understand, control and ultimately reduce the risk associated with large scale caving methods has generated significant research activities in the area of caving mechanics, fragmentation, draw control and numerical modelling.
