properties of cemented rockfill used in an open pit mine
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properties of cemented rockfill used in an open pit mine.

Properties of cemented rockfill used in an open pit mine

This paper examines the physical properties of cemented rockfill that is being used to form a crown pillar between future underground mining and the existing open pit at the Diavik Diamond mine in Canada. This is a unique application of cemented rockfill in mining. The preparation and placement procedures and quality control measures used for the

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[PDF] Properties of cemented rockfill used in an open pit ...

This paper examines the physical properties of cemented rockfill that is being used to form a crown pillar between future underground mining and the existing open pit at the Diavik Diamond mine in Canada. This is a unique application of cemented rockfill in mining. The preparation and placement procedures and quality control measures used for the cemented rockfill are presented.

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Shear properties of cemented rockfills - ScienceDirect

Aug 01, 2018  In many Canadian underground mines, the use of cemented rockfill (CRF) as backfill material is a common practice (Yu and Counter, 1983, Reschke, 1993, Shrestha et al., 2008, Emad et al., 2012). Especially in cut-and-fill or blasthole stoping operations, which are usually divided by the primary and secondary stopes, shear properties play an ...

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CEMENTED ROCKFILL IN MINING - A REVIEW TECHNICAL

At Kidd Creek Mine, Tirrunins ,. Ont ario, cemented rockfill is used to mine secondary pillars in 130 m (400 ft) lifts using a oked draw . Hull and Miller's (1974) r eport contains the following limited i nformation on fill operations at Kidd Creek Mine . The rock is mined from an open pit and crushed and well graded from -150 mm down.

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(PDF) Shear properties of cemented rockfills

Application of cemented rockfilling to underground mining could not be separated from the corresponding backfill’s shear strength properties. The shear of cemented rockfill

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Characterisation of cemented rock fill materials for the ...

The Xstrata Nickel Cosmos mine is located about 500 kilometres north of Kalgoorlie, Western Australia. At the Cosmos nickel mine Cemented Rock Fill (CRF) is used to fill the mining voids. The CRF is a mix of a crushed and screened waste rock from mine development, General Purpose cement

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CEMENTED ROCKFILL IN MINING - A REVIEW TECHNICAL

At Kidd Creek Mine, Tirrunins ,. Ont ario, cemented rockfill is used to mine secondary pillars in 130 m (400 ft) lifts using a oked draw . Hull and Miller's (1974) r eport contains the following limited i nformation on fill operations at Kidd Creek Mine . The rock is mined from an open pit and crushed and well graded from -150 mm down.

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(PDF) Shear properties of cemented rockfills

Application of cemented rockfilling to underground mining could not be separated from the corresponding backfill’s shear strength properties. The shear of cemented rockfill

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Types of Mine Backfill - MiningInfo

Cemented Rockfill. Generally consist of waste rock mixed with a cement slurry to improve the bond strength between the rock fragments. Methods of placement involve mixing the rock and cement slurry in a hopper before placing in stopes, or percolating a slurry over the rock after it has been placed. The waste rock can be classified or unclassified.

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Paper: Optimisation of cemented aggregate backfill at New ...

Abstract: Cemented aggregate fill (CAF) and cemented rockfill (CRF) have successfully been used as a low-cost, highstrength backfill material in underground mines. The placement of the material and flowability generally limits the technology to low throughput application and smaller stope sizes if tight filling is required.

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Backfill - QueensMineDesignWiki

Rock fill can be cemented or non-cemented mine waste rock or aggregate material placed underground by means of trucks, conveyors or raises. Each backfill operation is unique in terms of the business case, logistics, mining depth, strength required, materials used and the reason for the backfilling operation.

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A Gaussian process machine learning model for cemented ...

Oct 18, 2019  Reschke A (1993) The use of cemented rockfill at Namew Lake mine, Manitoba, Canada. In: Minefill, pp 101–108. 2. Shrestha BK, Tannant DD, Proskin S, Reinson J, Greer S (2008) Properties of cemented rockfill used in an open pit mine. In: GeoEdmonton’08. The Canadian geotechnical society edmonton, pp 609–616. 3.

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Effect of delayed backfill on open stope mining methods ...

Design curves were developed for the stability of sill mats for various stope configurations and cemented rockfill strength properties This, coupled with defining the effect of mining adjacent to backfill, forms the focus of this thesis. For non-commercial purposes only, such as research, private study and education.

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Major Mines Projects Nevada Gold Mines Mine

Turquoise Ridge Surface uses conventional open pit mining methods including drilling, blasting, loading, and hauling. South Arturo South Arturo is an open pit and underground project. The primary method of underground mining will be underhand cut and fill with cemented rockfill as the fill material.

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(PDF) Cyanide control in tailings pond: Ovacik gold mine ...

Underground mining shall be through mechanised mining methods. Ore shall be mined in 3m thick slices with excavated space being filled with cement added fill material from levels spaced at 25 m intervals. Major haulage drift is 4 m by 4.50 m. Steel wire mesh and cement spray are being used for support purposes. During the initial years, the ...

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Agnico Eagle Mines Limited - Operations - Operations ...

Each stope is backfilled, with cemented pastefill and/or cemented rockfill used in primary stopes and dry rockfill for the secondary stopes. A conventional truck/shovel operation is used for the open pits. Mining at Tiriganiaq in 2020 was carried out from both underground and an open pit.

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State-of-the-Art Techniques for Backfilling Abandoned

by in-mine or remote methods, and various point support methods that do not completely fill the mine void and are used for the protection of small areas of the land surface and surface structures. IMining engineer, Pittsburgh Research Center, U.S. Bureau of Mines, Pittsburgh, PA (now with U.S. Department of Energy, Germantown, MD).

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Innovative CRF batch plant design at the Leeville Mine, Nevada

mining methods employ both underhand cut and fill and longhole open stoping. The cemented rockfill (CRF) system provides the primary means of ground support and is a critical element in the mining cycle from both a safety aspect as well as for maximizing the extraction ratio of the highly valuable ore. Team Mixing Technologies was awarded the

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Minerals Free Full-Text Safety Analysis of Synergetic ...

The transition from open pit mining to underground mining is essential for mineral resources to achieve deep excavation. Recently, cemented paste backfill (CPB) has been proposed as a novel technology to achieve open pit backfill (OPB). The proposed method not only eliminates the danger of the open-pit slope but also reduces the disposal of waste tailings. In order to ensure safe mining during ...

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Designs For Highwall Safety Bunds In Open Cut Coal Mines ...

Correctly designed and cost-effective highwall bunds are essential for safety in large open cut coal mines Highwall and low wall stability are essential during open cut mining. Geotechnical investigations are required to quantify the mass and substance properties of soils and rocks within the mining

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Part 645 Construction Inspection National Engineering

The four properties used for evaluation are perme-ability, resistance to piping, compressibility, and work-ability. A numerical rating from 1 (most suitable) to 14 (least suitable) is used to determine the relative suit-ability of soil materials in rolled earth embankments, channel sections, and foundations.

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(PDF) Design and implementation of cemented rockfill at ...

3 Implementation of cemented rock fill Cemented Rockfill (CRF) is a mixture of run-of-mine waste rock mixed with cement slurry. Sump mixing with a loader offers the lowest cost form of exposable backfill available for small narrow vein stoping operations.

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Placer Dome Gold Mine - Mining Technology Mining News ...

Cemented rockfill is used in primary stoping blocks and uncemented rockfill in secondary stopes. Longitudinal stopes use conventional longhole benching and are backfilled with waste rock and crushed material from open-pit stripping.

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State-of-the-Art Techniques for Backfilling Abandoned

by in-mine or remote methods, and various point support methods that do not completely fill the mine void and are used for the protection of small areas of the land surface and surface structures. IMining engineer, Pittsburgh Research Center, U.S. Bureau of Mines, Pittsburgh, PA (now with U.S. Department of Energy, Germantown, MD).

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Innovative CRF batch plant design at the Leeville Mine, Nevada

mining methods employ both underhand cut and fill and longhole open stoping. The cemented rockfill (CRF) system provides the primary means of ground support and is a critical element in the mining cycle from both a safety aspect as well as for maximizing the extraction ratio of the highly valuable ore. Team Mixing Technologies was awarded the

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Mining with Backfill - QueensMineDesignWiki

Mining with backfill is a requirement in the industry as it is an important aspect of many mining methods and is a solution to many rock stability issues. When a mine plans to use backfill there are a number of considerations to be made with regards to type

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Consolidation of underground rockfill for ... - mine smarter

It was recommended that these high-grade sill pillars be extracted earlier in the mine sequence. This reduced the risk of pillars overstressing, and more difficult recovery at the end of mine life. The backfill material above the sill pillars is unconsolidated run-of-mine development waste rock or unconsolidated rockfill

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SLOPE STABILITY ANALYSIS FOR OPEN PITS 1

Analyses of a deep wall in an open pit mine in the Peruvian Andes are used to compare limit equilibrium methods (SLIDE) with distinct element methods (UDEC) when the stability is controlled by rock mass strength. The pit wall has an overall slope angle of 37º and a

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Major Mines Projects Meliadine Mine

Each stope is backfilled, with cemented pastefill and/or cemented rockfill used in primary stopes and dry rockfill for the secondary stopes. A conventional truck/shovel operation is used for the open pits. Mining at Tiriganiaq in 2020 was carried out from both underground and an open pit.

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Agnico Eagle Mines Limited - Operations - Operations ...

Mining. Mining concluded at the Meadowbank site in 2019. A conventional open-pit mining operation has been developed at the adjacent Whale Tail and V Zone deposits at the Amaruq site, with ore being transported using long haul off-road type trucks to the mill at the Meadowbank facilities for processing.

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Sherman Basin SPE

The first significant underground mining was conducted in the West Generator Mine, developed from the bottom of the West Generator Pit, in a small deposit whose extraction would require an uneconomic lay-back of the existing pit wall. Rock mass quality at West Generator allowed the use of a sublevel stoping mining method with cemented rockfill.

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quarry National Geographic Society

A quarry is a type of mine called an open-pit mine, because it is open to the Earth's surface. Another type of mine, a sub-surface mine, consists of underground tunnels or shafts. The most common purpose of quarries is to extract stone for building materials. Quarries have been used for thousands of years.

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Discussions on Dynamic Interaction Between Piles and Large ...

to use similar material locally available in San Diego area. Smaller particle size gravel was used to fill the bottom 2.1 m of the pit as a working platform, and then the rockfill was placed on top of this gravel layer. The gradation of the rockfill used is shown in . Fig. 4. with typical POLA specifications.

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Ore Dilution – An Underground Perspective

Mar 11, 2019  In open pit mining, ore losses are not typically given much consideration. ... the ore faces can have a significant impact on one’s understanding of the variability of the ore contacts and the properties of minor faults. ... It took many months with trucks and cemented rockfill to fill the stope. A paste system would have done the job in one ...

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