vertical crater retreat

vertical crater retreat

VCR法的实质与工序_矿库网

2020.1.29  在国内外应用比较广泛的阶段凿岩阶段矿房法方案是垂直漏斗后退式采矿法（Vertical Crater Retreat Method，简称VCR法）。 该方法的实质是：利用地下潜孔 钻机

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Geotechnical aspects of vertical crater mining method in

2017.8.28  Geotechnical aspects of vertical crater mining method in a deep mine S. C. Goel Zambia Consolidated Copper Mines Ltd, Zambia SYNOPSIS Vertical Crater

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Evolution of Vertical Crater Retreat Mining at Mindola Mine

This paper discusses the technical and operational aspects of vertical crater retreat mining at Mindola mine during the last ten years. The changes in mining method are often

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金川高应力矿床充填采矿技术研究进展与亟待解决的技术难题 ...

2015.1.13  Vertical crater retreat，简称VCR采矿法，即为垂直漏斗后退式采矿法，在金川不良岩层条件下能否应用？ 1984—1987 .引进ROC306 型履带式井下高压潜孔钻

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(PDF) Shrinkage stoping and Vertical Crater

2014.2.1  Abstract and Figures. Shrinkage stoping Ascending method of mining Advantages and Disadvantages Vertical Crater Retreat stoping Introduction Application Developmental sequence of stopes...

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Study on the raising technique using one blast based on the

2019.1.1  In the previous work reporting the results of preliminary study, method of vertical crater retreat (VCR) multiple-deck shots with different and smaller slice heights

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Vertical Crater Retreat: an Important New Mining Method

INTRODUCTION The introduction of 165-mm (61/z-in.) holes to underground mining operations has made possible the application of Canadian Industries Ltdapos;s (CIL)

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Mining Methods SpringerLink

2016.7.13  Vertical crater retreat method (VCR) is used at the deposits that have competent steeply dipping ore hosted by the competent wall rocks (Fig. 2.9). The ground

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The Blasting Test and Blasting Vibration Monitoring of

2017.8.28  In order to ensure the safety of the residence and the underground tunnel cavern within the mobile belt of the underground mining, the Luohe iron mine did the

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-Vertical crater retreat mining method (Atlas

Download scientific diagram -Vertical crater retreat mining method (Atlas Copco, 2007) from publication: Possibility of application of backfill methods with cementing fill in ore body Borska ...

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Vertical crater retreat mining in the Sudbury Basin

1991.9.1  The safety aspect of vertical crater retreat mining has been of concern, and was the focus of a provincial inquiry. The benefits in improved safety are demonstrated through an analysis of various records kept by the mines and provincial agencies. Future trends can now be envisaged, particularly in relation to deep mining.

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Vertical crater retreat mining in the Sudbury Basin

1991.9.1  Min. Sci. Technol., 13: 131-143. Faced with rising costs and lower metal prices, several Ontario base metal sulphide mines have changed their method of mining to vertical crater retreat mining. This is a bulk mining method that utilizes large diameter holes and mines successive cuts remotely by blasting and cratering the bottom of the drill holes.

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VERTICAL CRATER RETREAT - ResearchGate

Vertical crater retreat (VCR) mining is a method originally developed by the Canadian mining company INCO. Today, VCR is an established mining method used by mines all over the world that have ...

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Vertical Crater Retreat (VCR) con relleno - Prezi

2024.7.8  Vertical Crater Retreat (VCR) Con Relleno Características del método Yacimiento VCR Principio Relleno final del caserón Bajo factor de carga Autosostenimiento Método mecanizado Perforaciones en abanico Barrenos de gran diámetro No requiere de chimeneas auxiliares Diseño (VCR)

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Shrinkage and Vertical Crater Retreat Stoping PPT

2014.10.23  10. Vertical Crater Retreat (VCR) or Vertical Retreat Stoping: configuration method in stopes where drilling large diameter is used to detonate horizontal slices of ore, leading them to the base of the block being mined. The method progresses vertically, as successive slices of ore are detonated. Vertical Crater Retreat (VCR) uses

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Vertical Crater Retreat Mining in the Sudbury Basin - AusIMM

Faced with rising costs and lower metal prices, several Ontario base metal sulphide mines have changed their method of mining to vertical crater retreat mining. This is a bulk mining method that utilises large diameter holes and mines successive cuts remotely by blasting and cratering the bottom of the drill holes. The orebody is mined from the bottom up. The

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CASE STUDY ON VERTICAL CRATER RETREAT MINING - ppt

VCR MINING Vertical crater retreat (VCR) mining is a method originally developed by the Canadian mining company INCO. Today, VCR is an established mining method used by mines all over the world that have competent, steeply dipping ore and host rock. VCR is based on the crater blasting technique in which powerful explosive charges are placed in

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TPN° 1 - Método Vertical Crater Retreat (VCR) - Studocu

Método Vertical Crater Retreat (VCR) Aplicaciones del método V.C. El método V.C., es utilizado en excavaciones, tanto de producción como de desarrollo y su autonomía es hasta unos 70m. Su aplicación ha dado buenos resultados en términos de productividad, rendimiento, costos de operación y seguridad.

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Full article: Mining method selection for extracting

2022.5.17  When the criteria are evaluated with the alternatives, the mining method with the highest score of 18% was found to be Vertical Crater Retreat (VCR) followed by Sublevel Open Stoping with 16.62%.From the sensitivity analysis, rankings did not change as the variables were altered by 1 to 6% and 5 to 25%.The Vertical crater Retreat still

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Evolution of Vertical Crater Retreat Mining at Mindola Mine,

2000.1.1  The vertical crater retreat method of mining was first introduced at Mindola mine in the late-1980s following several trials that helped define the design criteria for its application. Over the last ten years the method has been continually modified to improve safety and maximise ore production. For example, due to the weakness of some rock ...

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Vertical Crater Retreat PDF Minería Minerales - Scribd

2024.4.3  Vertical Crater Retreat PDF Minería Minerales. El método VCR (Cráteres Verticales en Retroceso) es un método de explotación minera que involucra la perforación de barrenos verticales u oblicuos desde un nivel superior hasta el inferior a través... by marco7trejo_1.

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Shrinkage stoping Vertical Crater Retreat stoping

2024.2.22  Vertical Crater Retreat (VCR) or Vertical Retreat Stoping: configuration method in stopes where drilling large diameter is used to detonate horizontal slices of ore, leading them to the base of ...

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The Blasting Test and Blasting Vibration Monitoring of Vertical Crater ...

2016.5.4  The blasting test on the vertical crater retreat mining method and the blasting vibration were analyzed. It is estimated if the vibration damage possibly the surface buildings and related facilities of mine. Because the land requisition and demolishing became difficult more and more, the mining scheme of Luohe iron mine was changed

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Vertical Crater Retreat: an Important New Mining Method

INTRODUCTION The introduction of 165-mm (61/z-in.) holes to underground mining operations has made possible the application of Canadian Industries Ltdapos;s (CIL) vertical crater retreat (VCR) mining method, illustrated in the accompanying sketches. This unique and revolutionary new application of spherical charge technology (see the

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VCR采矿法 - 矿业百科

2023.6.29  vertical crater retreat mining method 简介 在下向大直径深孔中装填球状药包并自下而上崩落矿石的阶段矿房采矿法。它可用于回采矿房、也可用于胶结充填矿房后回采矿柱。 结构参数和采准 矿体厚度小于15或20m时，矿块沿矿体走向布置;更厚时，则垂直于走向

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Vertical Crater Retreat Pillar Mining-A Case Study - AusIMM

The Vertical Crater Retreat (VCR) mining method was used to mine two rib pillars at New Broken Hill Consolidated Limited (NEHC) mine at Broken Hill. Experience gained in a trial VCR pillar stope was applied to the design of Panel 3CN pillar (P3CN). Restricted access and a central sandfilled plug in this pillar necessitated the use of angled blastholes and

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A Review of Sublevel Stoping

2024.6.13  ABSTRACT. A review of the factors controlling stope wall behaviour such as excavation geometry, rockmass strength, induced stress, ground support, blast damage and drill drive layout is undertaken. In addition, the advantages and disadvantages of single lift stope geometries linked to vertical crater retreat are also analysed.

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THE UNIVERSITY OF ZAMBIA

2023.11.14  to improve the stability of Vertical Crater Retreat chambers and Ventilation drives. Among them are, mining the Ventilation drives at not less than 48 meters from the geological footwall contact, mining the Vertical crater retreat chambers at 25.25 meters strike length and supporting them with 6 meters cable bolts and fibre reinforced

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VERTICAL CRATER RETREAT - ResearchGate

Vertical crater retreat (VCR) mining is a method originally developed by the Canadian mining company INCO. Today, VCR is an established mining method used by mines all over the world that have ...

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Vertical Crater Retreat Download Free PDF Mining

2013.12.25  Vertical Crater Retreat - Free download as Word Doc (.doc), PDF File (.pdf), Text File (.txt) or read online for free. Vertical crater retreat is a method of blasthole mining where large diameter holes are drilled using in-the-hole drills to blast horizontal slices of ore into an opening below. The method exploits the cratering effect of explosives close

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Mining Methods SpringerLink

2016.7.13  2.2.4 Vertical Crater Retreat. Vertical crater retreat method (VCR) is used at the deposits that have competent steeply dipping ore hosted by the competent wall rocks (Fig. 2.9). The ground conditions in general is similar to that of the SLOS method, however the VCR is technically simpler and allows to achieve a large production rate commonly ...

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246311263 Metodo de Explotacion Vcr Vertical Crater Retreat

Hoy en día, Crater Retreat vertical es un método de extracción establecida, que se utiliza en las minas de todo el mundo. Retiro cráter vertical se basa en la técnica de chorreado cráter. Potentes cargas explosivas se colocan en los agujeros de gran diámetro y disparó. El concentrado, "esférica" carga está situado a una distancia ...

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Definition of vertical crater retreat - mindat

Definition of vertical crater retreat. i. A blasting method employed in underground sublevel mining. Initially a vertical slot extending across the width of the stope is mined. The remaining portion of the stope is then blasted by section into the vertical slot following sublevel procedures. Ref: SME, 1. ii.

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Vertical Crater Retreat Descargar gratis PDF Minería - Scribd

2017.1.10  Vertical Crater Retreat Descargar gratis PDF Minería Aluminio. El documento describe el método de explotación VCR (cráteres verticales en retroceso) utilizado en la mina Monterrosas en Perú. Se realizó el desarrollo de niveles superiores e inferiores para prep... by sairyc_1.

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Vertical Crater Retreat - DIGISTAR

Vertical Crater Retreat. Blasthole mining is a general term applied to mining methods that employ long hole drilling for the production of ore. In most Blasthole methods the ore is blasted into a vertical opening. In most blasthole methods the ore is blasted into a vertical opening. The blastholes may be small diameter long hole carbide drill ...

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método de explotación vcr vertical crater retreat

2015.12.26  Crater Retreat vertical se aplica a los yacimientos con salsa y el rock fuerte competencia tanto en el mineral y roca huésped. Parte del mineral de chorreado permanecerá en el rebaje sobre el ciclo de producción, que sirve como soporte temporal de las paredes caserones. III. DESCRIPCIÓN DEL VCR, O CRATER RETREAT VERTICAL

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(PDF) Sublevel Stoping Underground Mining Methods

2014.2.1  Shrinkage stoping Ascending method of mining Advantages and Disadvantages Vertical Crater Retreat stoping Introduction Application Developmental sequence of stopes Production How Cratering Works .

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