Vertical Crater Retreat Mining Method

Vertical Crater Retreat Mining Method

VCR采矿法_知网百科

VCR采矿法(Vertical Crater Retreat mining method)全称为垂直深孔落矿阶段矿房法[1-2],1974年该采矿法在加拿大涅瓦克矿矿柱回采时取得了成功,得到了多国采矿行业的高度重视,随后各国逐步推广应用。

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Vertical Retreat Mining (VRM) or Vertical Crater Retreat

2021-2-26 · Background. VRM is a contraction of ‘Vertical Retreat Mining’, however it is also known as ‘Vertical Crater Retreat’ or ‘VCR’ or sometimes simply called ‘Inverted Crater Blasting’. In 1983, it was called ‘an achievement of the last decade’ and is practiced in mines in Canada, Australia, Europe, Central America, and the U.S.

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Vertical Crater Retreat - digistar.mb.ca

Vertcial crater retreat is a comparatively new method of blasthole mining in which only large diamter ITH holes are used to blast down horizontal slices of ore into an opening below the block of ore being mined. The method on the 'cratering' effect of an explosive charge being blasted close to the end of the hole.

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Vertical Crater Retreat | PDF | Mining | Science

2017-4-5 · 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.

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Vertical crater retreat mining in the Sudbury Basin ...

1991-9-1 · Vertical crater retreat mining in the Sudbury Basin. 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 ...

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VERTICAL CRATER RETREAT - researchgate.net

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 ...

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Vertical crater retreat mining in the Sudbury Basin ...

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

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Geotechnical aspects of vertical crater mining method in a ...

Vertical Crater Retreat is compared to other open stoping methods. Various geotechnical factors have been considered including the effects of stress concentration, jointing, dynamic stresses superimposed by blasting vibrations, amount of development required and shrinkage draw. All these factors favour a VCR method in a deep mining environment.

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(PDF) Shrinkage stoping and Vertical Crater Retreat stoping

2021-11-20 · 8. VCR - V ertic al Cra ter R etr eat. V ert ical Crater Retreat (VCR) or V ertical Retreat Stoping: configuration method in stopes where drilling large diameter is

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Vertical Retreat Mining (VRM) or Vertical Crater Retreat

2021-2-26 · Background. VRM is a contraction of ‘Vertical Retreat Mining’, however it is also known as ‘Vertical Crater Retreat’ or ‘VCR’ or sometimes simply called ‘Inverted Crater Blasting’. In 1983, it was called ‘an achievement of the last decade’ and is practiced in mines in Canada, Australia, Europe, Central America, and the U.S.

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Geotechnical aspects of vertical crater mining method in a ...

Vertical Crater Retreat is compared to other open stoping methods. Various geotechnical factors have been considered including the effects of stress concentration, jointing, dynamic stresses superimposed by blasting vibrations, amount of development required and shrinkage draw. All these factors favour a VCR method in a deep mining environment.

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A new model for mining method T selection of mineral ...

2009-8-26 · vertical crater retreat mining (VCR), strip mining and novel extraction methods such as hydraulic mining and borehole mining. Moreover, underground methods such as longwall may be performed in the retreat or advance mode and the ground control may be performed by caving or filling. Therefore choices in the mining method selection process are

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Baselining Vertical Retreat Mining as a Mining Method

2021-2-26 · VRM is a contraction of "Vertical Retreat Mining", however it has other names as well - as sophisticated as "Vertical Crater Retreat" or "VCR" or simply called "Inverted Crater Blasting". In 1983, it was called "an achievement of the last decade and is practiced in mines in Australia, Europe, Central America, and the U. S.

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Underground Mining and Its Methods - BusinessTech

2021-3-30 · Vertical retreat mining (VRM) is a selective mining method that is used to divide mines into vertical zones. It is also known as Vertical crater retreat (VCR). It divides the mines with a depth of about 50 meters. Open stopping, a bottom-up mining technique is used in this method. Block Caving. It is one of the bulk mining methods.

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Study on the long-hole raising technique using one blast ...

2021-1-14 · This method is called vertical crater retreat (VCR) or vertical retreat mining (VRM) method. VCR method has been an established mining method being practiced in various mines all over the world [8]. An offshoot of this mining method is the VCR drop-raising technique that employs

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Major Mines & Projects | Pilar (Caraiba) Mine

The Pilar UG Mine has previously employed the following mining methods: Sublevel Stoping, VRM and Vertical Crater Retreat (“VCR”). VRM is the method currently employed, whereby ore is removed from the stope after it is blasted and cemented paste backfill is pumped into the mined stopes to ensure geotechnical stability prior to advancing to ...

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The Blasting Test and Blasting Vibration Monitoring of ...

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. Introduction. The initial design scheme of the Luohe iron mine was sub-level caving mining. In the collapse area, the requisition of lands ...

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Vertical Crater Retreat Mining Method - mode-design

Vertical Crater Retreat Mining In The Sudbury Basi. 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

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POSSIBILITY OF APPLICATION OF BACKFILL METHODS

2017-6-8 · 3.3. Vertical crater retreat mining method - VCR Vertical Crater Retreat method applies to orebodies with steep dip and competent rock in both ore and host rock. Part of the blasted ore will remain in the stope over the production cycle, serving as temporary support. This mechanized method can be regarded as a considerably safer form of ...

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Baselining Vertical Retreat Mining as a Mining Method

2021-2-26 · VRM is a contraction of "Vertical Retreat Mining", however it has other names as well - as sophisticated as "Vertical Crater Retreat" or "VCR" or simply called "Inverted Crater Blasting". In 1983, it was called "an achievement of the last decade and is practiced in mines in Australia, Europe, Central America, and the U. S.

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VCR Method_2018.pdf - MINE 411 Underground Mining

MINE 411 Underground Mining Methods & Equipment Course Instructor: Prof. Raymond S. Suglo Students: UMaT BSc. III 1 VERTICAL CRATER RETREAT (VCR) MINING METHOD The Vertical Crater Retreat (VCR) method is basically an open stoping method which resembles shrinkage stoping. It was developed in Canada. Area of Application The VCR method is used in mining steeply dipping narrow

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Vertical Crater Retreat Mining Method - mode-design

Vertical Crater Retreat Mining In The Sudbury Basi. 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

Read More
Study on the long-hole raising technique using one blast ...

2021-1-14 · This method is called vertical crater retreat (VCR) or vertical retreat mining (VRM) method. VCR method has been an established mining method being practiced in various mines all over the world [8]. An offshoot of this mining method is the VCR drop-raising technique that employs

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Vertical Crater Retreat - VSIP.INFO

Vertical Crater Retreat Blasthole mining is a general term applied to mining methods that employ long hole drilling for...

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The Best Methods for Underground Mining - Industry Tap

2021-4-14 · The vertical crater retreat mining method is also known as VCR mining. This mining method precipitously dips strata for mineralization. This method blasts rocks with total and heavy charges with a large diameter of 165 mm. VCR’s blasting creates a cone-shaped opening in the targeted rock mass to let the materials be mined quickly.

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Underground Mining and Its Methods - BusinessTech

2021-3-30 · Vertical retreat mining (VRM) is a selective mining method that is used to divide mines into vertical zones. It is also known as Vertical crater retreat (VCR). It divides the mines with a depth of about 50 meters. Open stopping, a bottom-up mining technique is used in this method. Block Caving. It is one of the bulk mining methods.

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Shrinkage and Vertical Crater Retreat Stoping

2014-10-23 · Shrinkage and Vertical Crater Retreat Stoping 1. Hassan Z. Harraz [email protected] 2014- 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so

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Underground Mining Methods - UFRGS

2009-12-7 · Underground Mining Methods and Applications FIGURE 1.3 Post room-and-pillar mining mined out Numbers indicate sequence of extraction FIGURE 1.4 Step-room mining of inclined orebody Deposits with large vertical heights are mined in slices. Mining starts

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