• ridgeway deepsmine block caving

    ridgeway deepsmine block caving. ridgeway deepsmine block caving. Mining Methods: Block CavingGeology for Investors. 017· In some mines, there are multiple block caving events, such as at the Ridgeway mine in Australia, when the initial block cave was depleted they went deep (1100 metres below surface) for their second block cave.

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  • Digging a little deeper

    use paste cut and fill or block caving. The method used does not necessarily vary depending on the commodity being mined. The ability to mine at depth generally comes down to the value of the ore that is being mined, and the economic viability. The value of the ore must overcome the higher capital and operating costs associated

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  • Cadia East Gold/Copper Mine Project, Australia

    The Cadia East deposit is a porphyry zone (rock of feldspar crystals embedded in a compact dark red or purple groundmass) with gold-copper mineralization. Adjacent to the edge of the existing Cadia Hill Open pit, it extends up to 2.5 kilometers east. The system is up to 600 meters wide and 1.9 kilometers deep.

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  • ROCK MASS CHARACTERIZATION FOR EXCAVATIONS IN …

    nor block caving are likely to occur without significant assistance. It is quite likely that, whatever the overall Q-value at a given (potential) block caving locality in an ore body, the actual combination Jn/Jr will need to be ≥6 for successful caving (e.g., 6/1, 9/1.5, 12/2), while such combinations as 9/3 might prove to be too dilatant.

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  • Full-scale Flow Marker Experiments at the Ridgeway Deeps ...

     · 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 for RW, RWD and CEPC1 respectively).

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  • Mining Methods: Block Caving | Geology for Investors

     · In some mines, there are multiple block caving events, such as at the Ridgeway mine in Australia, when the initial block cave was depleted they went deep (1100 metres below surface) for their second block cave. In other cases such as Cadia, Palabora and Chuquicamata block caving …

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  • Ridgeway Gold and Copper Mine, New South Wales

    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 was developed at a cost of A$525m by Ausenco. The project involved construction of a block …

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  • Major Mines & Projects | Cadia Valley Mine

    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 grade profile for Ridgeway was declining to the point where subsequent SLC levels below the 5040 mRL were uneconomic.

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  • Cadia East

     · General manager at CVO, Tony McPaul, said block caving at its Ridgeway mine gave Newcrest the chance to perfect the technology before applying the method at Cadia East.

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  • Mining Methods: Block Caving | Geology for Investors

     · In some mines, there are multiple block caving events, such as at the Ridgeway mine in Australia, when the initial block cave was depleted they went deep (1100 metres below surface) for their second block cave. In other cases such as Cadia, Palabora and Chuquicamata block caving was the solution to extending mine life when the open pit ...

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  • Open Pits Going Underground

    ing services in block caving and sub-level caving methods. More recently he has been involved in block cave and sub level cave studies for Newcrest''s Ridgeway and Telfer Projects, operational and study reviews for Northparkes block cave, a block cave assessment for Olympic Dam, due diligence review of the Didipio block

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  • Newcrest increases mine caving technique

     · Block caving is being used for the Ridgeway Deeps deposit and a block cave variation called sub-level caving will be applied at the Cadia East operation, which will become Australia''s largest ...

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  • SEG Distinguished Lecture

    Block Caving (BC) Panel Caving (PC) ~50% Lower Capital Costs Mining cost reduction After Flores 2011 . E26 Opencut Mine Sublevel Access Decline Crusher Control Room ... Ridgeway decline portal Ridgeway subsidence zone Cadia Hill open cut . Thermal gradient •Rarely considered

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  • Sublevel caving

    Sublevel Caving can be used in orebodies with very different properties and is an easy method to mechanize. This method is normally used in massive, steeply-dipping orebodies with considerable strike length, and usually has a high amount of dilution and low recoveries. Thus Sublevel Caving is usually used to mine low-grade, low-value orebodies.

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  • Key geotechnical knowledge and practical mine planning ...

    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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  • Block Cave Underground Mine

    Caving Process 65 30 45 55 • Cave mining is based on the principle that, once a sufficiently large area of a block has been undercut by drilling and blasting, the overlying block of ore will start to cave under the influence of gravity. • The process will continue until caving propagates through the entire block to …

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  • Production Scheduling with Horizontal Mixing Simulation in ...

     · High production rates and low operating costs highlight block caving as one of the favorable underground mining methods. However, the uncertainties involved in the material flow make it complicated to optimize the production schedule for such operations. In this paper, a stochastic mixed-integer linear optimization model is proposed in order to capture horizontal mixing that occurs among …

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  • Production Scheduling with Horizontal Mixing Simulation in ...

    al. (2016) performed a full-scale experiment in Ridgeway Deeps and Cadia East block caving mines in Australia. They used markers to quantify and assess the development and shape of the extraction zone and find the mechanisms that control the flow behavior. It was shown that marker experiments

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  • Parameters influencing full scale sublevel caving material ...

    Here, three draw strategies are studied: isolated draw, panel caving draw, and block caving draw. Results show that induced vertical stresses can vary between 0.3 and 2.8 times their initial vertical value and are highly influenced by both the distance from the …

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  • Cadia East Ensuring at least another 30 years mining at ...

    application of Panel Caving mining – Potentially >16Mtpa mining rate – 2 x 350m lift''s – Multiple caving fronts Ridgeway 5.6 Mtpa Cadia Hill Pit 16 Mtpa Cadia East Pit Cadia East Underground, Project Decline Ridgeway Deeps, Block Caving

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  • Cave Tracker: Safe and performing block cave mines

    Cave Tracker: Safe and performing block cave mines Improving decision making through detailed insights Block caving as a mining method is a risky enterprise given the lack of insight into the environment in which the mine must operate. Block caving relies on fragmentation and forces of gravity to ''cave'' the fragmented ore to draw points built

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  • Mining Deeper: The Importance of Understanding Brittle ...

    Going Deeper – Block Cave Mining 200 m Moss (2014): The next generation of "super caves" planned to ramp up copper production to 400,000 tpd over the next 15 years, will involve the construction of more than 1000 km of development tunnels, 12,000 drawpoints and 3,000 pillars to manage and support.

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  • Block caving with Rio and NCM

    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

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  • Microseismic analysis to identify the caving front ...

    Block caving is an underground mining method that approaches the ore body from beneath the deposit. As material Case Study ESG Solutions 20 Hyperion Court, Kingston, ON, Canada K7K 7K2 Tel: +1.613.548.8287 Fax: +1.613.548.8917 [email protected] Fig. 1: Cave front at the Ridgeway mine eventually broke through to the ...

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  • Mining''s future is underground

    Block caving is an efficient mining method that is commonly used to access ore deeper underground. It is based on the concept of gravity forcing the ore to the various draw points below it. Examples of block caves include Rio Tinto''s Northparkes mine and Newcrest''s Ridgeway mine, both …

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  • Block Caving: Mining Specialization | E & MJ

    The current concept involves a 7.5-km-long access decline leading to four production levels, with block caving being used to produce 140,000 mt/d of ore. And in the U.S., the possibility of mining below the existing Bingham Canyon pit raises the prospect of extending the mine''s life beyond 2050.

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  • Design and evaluation of single

    block caving, blasting, drawbell in one phase, full-scale test. Literature review After a century of operation, the world''s largest open pit mine will reach its profitable limit by the end of this decade. At over 1100 m in depth and 4.5 km in length, the historical Chuquicamata open pit mine

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  • Underground hard-rock mining

    Underground hard-rock mining refers to various underground mining techniques used to excavate "hard" minerals, usually those containing metals, such as ore containing gold, silver, iron, copper, zinc, nickel, tin, and lead also involves the same techniques used to excavate ores of gems, such as diamonds and rubies. Soft-rock mining refers to the excavation of softer minerals, such as salt ...

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  • Cadia

     · Cadia - Ridgeway Mine. Cadia Valley Operations (CVO) is one of Australia''s largest gold mining operations and is 100 per cent owned by Newcrest. It is located approximately 25 kilometres from the city of Orange in central west New South Wales and is 250 kilometres west of Sydney. CVO comprises three mines - the Cadia Hill open pit mine, and ...

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  • Block Caving: Mining Specialization

    Block Caving: Mining Specialization While block caving is not a new concept, ... and Nat Burgio from Stratavision in Australia co-authored a paper on the use of PCBC software for modeling the Ridgeway Deeps block cave, which they presented at the MassMin 2008 conference in Luleå, Sweden. With the trend toward the establishment of block caves ...

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  • (PDF) Design methodology for underground ring blasting ...

    In the case of block tools provide the platforms for managing geometrical caving undercut and drawbell design, the design and geotechnical information. Laser based cavity objectives may reflect specific requirements which may monitoring systems are now systematically used to include: define adjacent stope volumes and boundaries.

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  • Investigation and characterization of surface subsidence ...

    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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  • O''Neill visits Newcrest mines in Australia – The National

     · At Ridgeway Deeps, the ore caves in under gravity to a single extraction level at the base of the ore body. Block caving is a low cost mining method as the ore caves in naturally without the need for traditional drilling and blasting.

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  • Guideline for Managing the Risk of an Airblast in an ...

    effects of an airblast in a caving mine. Note that: • Adherence to Guidelines does not of itself assure compliance with the general Duty of Care. • Mine operators deviating from Guidelines should document a risk assessment supporting the alternative arrangements. However, the risk assessment should always be current, relevant and be regularly

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  • Application of time domain reflectometry (TDR) for block ...

    TDR is an essential part of successful cave management for block caving mines. It is used to verify cave initiation, the subsequent progress of the caving zone and the effect of caving on rock mass ... (Bartlett, 2008), Ridgeway (Trifu et al., 2002) and San Manuel (Panek & Tesch, 1981) mines. One of the earliest applications of TDR in ...

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