Full-scale marker experiments at Cadia Valley underground operations have been ongoing for over 14 years. 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 …

PDF | Block caving is an important mining method for the future economic exploitation of large, low grade, steeply dipping orebodies. ... Ridgeway Deeps operation aiming to turn some of the cause ...

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 quantifying and assessing the geometry of the extraction zone, development of the extraction zone over time, variability of flow behaviour, and factors affecting flow …

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 …

High ore loss in SLC may be caused by many factors such as poor sublevel caving designs 13 (e.g., incorrect drift layout, poor geometrical shape of sublevel rings), poor drill and blast design, 14 ...

Freeport Indonesia's Block Caving Mines. The Deep Mill Level Zone (DMLZ) panel cave is currently in the transitional stages of undercutting and production. Misrepresentations in the characterization of the rock mass …

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 percolate …

Block caving is a low-cost, high efficiency, and large-scale mining method; block caving mining is the preferred method for mining deep mineral resources because of its small amount of rock ...

Block Caving Mining Method, Application Of. 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 ...

Block refers to the mining layout in which the ore-body is divided into large sections of several thousand square meters. Caving of the rock mass is induced by undercutting a block. The rock slice directly beneath the block is fractured by blasting, which destroys its ability to support the overlying rock.

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 …

Ridgeway Deeps (RWD) in Orange NSW Australia will be used as the example where innovative practices have assisted in establishing Newcrest's first Block Caving Operation. The Cave establishment phase including lateral development, Undercutting and Drawbell Construction impacts on cave construction time and the …

An experimental review of gravity flow for block and panel caving applications In Proceedings of Massmin2008, 9-11 of June, Lulea, Sweden, pp. 1043-1051. Castro, R., 2004. The scaling of physical model flow results for full scale mine design in block caving.The block caving mining method has become increasingly popular in the last …

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

NEEDS TO KNOW ABOUT BLOCK CAVING THE DEEP MINING METHOD OF THE FUTURE Touted as the deep mining method of the future, block caving is an ... 3D view of Block Caving mine, displaying draw column coloured by grade. Planview of extraction level of Block Caving mine. Colour ... _2016202224.pdf Philips M, 2016. …

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 ...

deep to mine economically as an open pit.1 The Pebble Limited Partnership has proposed to mine Pebble East using the underground block caving method, which is the cheapest way to mine underground (Figure 2). It allows ore – economically valuable rock -- to collapse under its own weight in a controlled fashion. A series of haulage tunnels would be

Planning the transition from SLC to block caving operation at Ridgeway gold mine [J]. 5th International Conference and Exhibition on Mass Mining: 2008:401~412. Mining Engineer Handbook Jan 2009

Long-term mine scheduling is among one of the optimization problems. Block caving technique is a mass mining method in which gravity is used in combination with internal rock stresses to fracture ...

and Ridgeway Deeps, as both mines produce copper and gold. Draw strategy optimiation model : In this model, the values of model coefficients A, B, and C (from Equation [3]) are used

Ridgeway Deeps Mine Block Caving Pdf Comedy. Ridgeway Gold And Copper Mine New South Wales . Ridgeway deeps mining the transformation of ridgeway underground a sublevel caving operation into a block cave involved a mine design and a process to ensure the rock naturally caves progressively upwards by a gravitational force of the …

The block caving mining process limits access to the orebody, in turn limiting opportunities to gauge the state of the rock mass once the rock mass degradation and caving process has initiated. Poor knowledge of the evolving state of the rock mass ... The Deep Mill Level Zone (DMLZ) panel cave is currently in the transitional stages of ...

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 ...

View PDF; Download full issue; Search ScienceDirect. ... June 2010, Pages 647-656. Parameters influencing full scale sublevel caving material recovery at the Ridgeway gold mine. Author links open overlay panel I.D. Brunton a b, S.J. Fraser c, J.H ... An airblast hazard simulation engine for block caving sites. International Journal of …

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 approximately 1100 m below surface. Due to the mine layout containing a number of common pieces of key infrastructure the activities of both were …

Fracture banding in caving mines. D. Cumming-Potvin, Johan Wesseloo, +1 author. E. Kearsley. Published 1 August 2016. Geology, Engineering. Journal of The South African Institute of Mining and Metallurgy. 2001) is widely accepted in industry and is the framework within which most monitoring and numerical modelling results in caving …

Example of excellent fragmentation at Ridgeway Mine (note: Tyre to be used as a marker for seeding the cave) Predicting caving fragmentation with BCF software A large rock fragment in a drawpoint at the Northparkes mine, Australia fragmentation and hang-ups in draw bells for the Northparkes Lift 2 block cave in Australia.

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 propagation must be controlled and continuous to allow safe extraction of ore below. The understanding and use of processes to manage granular flow behaviour are also …

AMC Mining Consultants (Canada) Ltd BC0767129 Suite 1330, 200 Granville Street Vancouver BC V6C 1S4 CANADA T +1 604 669 0044 F +1 604 669 1120

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 …