What is the difference between vertical and vertical mining method of pillarless sublevel caving

What is the difference between vertical and vertical mining method of pillarless sublevel caving

Block caving A new mining method arises

Block caving is an underground hard rock mining method that involves undermining an ore body allowing it to progressively collapse under its own weight It is the underground version of open pit mining In block caving a large section of rock is undercut creating an artificial cavern that fills with its own rubble as it collapses

Numerical Experimental Study on Ore Dilution in Sublevel Caving Mining

The main disadvantage of the mining method is the high ore dilution [7 8 9 10 11 12 13 14 15 16] Dilution occurs in the process of ore drawing and the contact area between ore and waste rock is large so the mixing rate of waste rock is high [17 18 19 20 21 22 23] In sublevel caving mining the ore dilution rate is usually between 15 and 30%

Methods in Mining by Sublevel Caving Harry Kristoffersson

1 A method of mining by sublevel caving comprising the steps of forming at least two vertically directed ventilation shafts disposed in spaced relation to one another within a rockwall adjacent an orebody driving a plurality of horizontally directed cross cuts extending in vertically spaced relation to one another from said rockwall and from

Combined Finite Discrete Element Modelling of Dynamic Rock Hindawi

A combined finite discrete element method FDEM is proposed to model the dynamic fracture fragmentation and resultant muck piling process during mining production by blast in underground mine The key component of the proposed method that is transition from continuum to discontinuum through fracture and fragmentation is introduced in detail which makes the proposed method superior to

Pillarless sublevel caving method based vertical partitioning and

The present invention discloses a method for non technical measures the gently inclined ore mining conditions pillar sublevel caving method method which vertical partitioning ore in combination and a disk replenish residual caving full coverage by the other to solve SUBLEVEL the sublevel caving ore under conditions effective gently inclined segment mining ore triangular vertical plate

sublevel caving in Hindi sublevel caving meaning in Hindi

1 The mine produces copper and cobalt from three sources Mindola Shaft Central Shaft and South Orebody Shaft Vertical crater retreat is the predominant mining method while sublevel open stopping and sublevel caving methods are also used

Vertical crater retreat QueensMineDesignWiki

VCR is a suitable mining method for orebodies that exhibit the following characteristics Advantages Safety Miners are working in drifts that are adequately ventilated and have fully supported roofs Furthermore no workers are required to work inside the stope minimizing the risk of unexpected injuries

What is block caving mining method

What is the difference between block caving and sublevel caving Sub level caving also allows for a slightly more selective extraction of the orebody than is attainable through block or panel caving Production rates achieved in sub level caving operations are typically lower than for block caves but higher than for stoping methods Caving

What is sublevel stoping mining method

What is VCR method Vertical crater retreat VCR also known as Vertical retreat mining is an open stoping bottom up mining method that involves vertically drilling large diameter holes into the orebody from the top and then blasting horizontal slices of the orebody into an undercut

1/6 Mining Methods FTB2 Flashcards Quizlet

Sublevel caving layout depends primarily on the size and shape of the ore body for steeply dipping and narrow ore bodies the appropriate layout is a longitudinal layout c cross section layout b perpendicular layout d traverse layout c Sublevel caving method is applicable to a competent ore body characteristics enclosed by strong wall rocks

Definition of sublevel caving

Definition of sublevel caving i A stoping method in which relatively thin blocks of ore are caused to cave by successively undermining small panels The ore deposit is developed by a series of sublevels spaced at vertical intervals of 18 to 25 ft or 30 ft to m or m and occasionally more

Sublevel Caving Technique PDF Mining Drilling Rig Scribd

Sublevel Caving Technique Free download as PDF File pdf or read online for free An underground mining method used in large steeply dipping orebodies where the wall rock is of an incompetent nature Parallel drives are developed in the ore on equally spaced levels The ore is then drilled and blasted using longholes between levels often in a circular or fan pattern on retreat

What is sublevel stoping mining method

What is the difference between block caving and sublevel caving Sub level caving also allows for a slightly more selective extraction of the orebody than is attainable through block or panel caving Production rates achieved in sub level caving operations are typically lower than for block caves but higher than for stoping methods

PDF Design of a new layout for sublevel caving at depth

improvements to keep production costs at desirable levels It should be mentioned that other mining methods have been tried but today sublevel caving is the only one used One of the key factors affecting the mining costs in sublevel caving is the amount of development work for production

Sublevel shrinkage caving stage open stope afterwards filling mining method

The invention discloses a sublevel shrinkage caving stage open afterwards filling mining method In the earlier stage of stoping caved ores are utilized to support surrounding rocks on a top tray and in the later stage of stoping a goaf area is filled with fillers to control ground pressure so as to achieve safe and efficient mining

Underground hard rock mining Wikipedia

The dip of the orebody also has an influence on the mining method for example a narrow horizontal vein orebody will be mined by room and pillar or a longwall method whereas a vertical narrow vein orebody will be mined by an open stoping or cut and fill method

Possible variations of sublevel caving method in order to improve the

Possible variations of sublevel caving method in order to improve the effects of mining Mining and Metallurgy Engineering Bor /mmeb1402061k = Comparative optimization of mining the Kraku Bugaresku Cementation deposit using Whittle and NPV Scheduler software 2024 •

Incline caving as a massive mining method SciELO

Finsch Mine is a kimberlite diamond mine located at Lime Acres in the Northern Cape Province of South Africa The mine was founded in 1961 and started surface mining in 1964 Underground production commenced in 1990 using a modified blast hole open stoping method for the mining of Blocks 1 2 and 3 Block 4 is currently being mined as a block cave

PDF Sublevel Stoping Underground Mining Methods ResearchGate

Abstract Considerations on the method Conditions for application of the deposit Characteristic of Sublevel Stoping Method Application Development Sublevel overhand Sublevel underhand

sublevel caving mining method

second hand vertical crusher bhs rmx 0922 ball mill solidworks MIN ENG 5932/4932 Advanced Underground Mining Methods Equipment Caving Methods Sublevel Caving Block Caving Problems with caving method Post mining Know More Topic 9 Mining Methods Part V

Method Sublevel Caving PDF Mining Rock Geology Scribd

Characteristics of the Method The SLC method is applied preferably in bodies of tabular vertical or Sub vertical large both in thickness and in its vertical extension It is also applicable in massive deposits The mineralized rock must present conditions of competition only enough so that the works placed in it remain stable with a minimum of

CN 111 PDF Mining Coal Mining

Caving Methods C Sublevel stoping D Shrinkage stoping A Sublevel caving E Stull stoping 180 ft and the vertical distance between the extraction and main haulage levels will vary Shortwall Mining A shortwa11 method is utilized in the same type of deposit and in the same rock material as longwall mining The primary difference in

Definition of sublevel caving

A stoping method in which relatively thin blocks of ore are caused to cave by successively undermining small panels The ore deposit is developed by a series of sublevels spaced at vertical intervals of 18 to 25 ft or 30 ft to m or m and occasionally more Usually only one or two sublevels are developed at a time beginning at the

Methods in Mining by Sublevel Caving Harry Kristoffersson

The present invention relates to a method in mining by sublevel caving in which in a development phase on one side of the orebody to be mined the haulage wall side or in case of an inclined orebody preferably the foot wall side are driven haulage drifts or shafts for example haulageways inclined relative to the horizontal plane and from said drifts or shafts are driven cross cuts

Structural Parameter Optimization for Large Spacing Sublevel Caving in

According to the actual situation of the mine at the level of −500 −570 m the sublevel height H is m that is a = m and the access width p = m through the industrial experiment eccentricity ε b = ε c = These values are substituted in Equations 6 and 7 to yield b = m and c = m

SUBLEVEL CAVING TECHNIQUE by Partha D Sharma Issuu

Sublevel caving extracts the ore via sublevels which are developed in the orebody at regular vertical spacing Each sublevel features systematic layout with parallel drifts along or

What is the difference between sublevel stopping and sublevel caving

Beginning at the starting raise the ore is benched down from the sublevels the broken ore falls into the mill holes where it is drawn off through the chutes The stope face is kept nearly vertical as it is benched backward toward the passageway raise It is practiced in lead zinc mines of Rajasthan and gold mines of Karnataka

Difference between block caving and sublevel caving

Answer 1 roshan30 Mr Hanrahan explains to MM A significant difference between sub level caving and other caving techniques is that multiple levels of development are required many times more than a block cave requires and ongoing ring blasting is used for production Caving is a non selective bulk mining method Advertisement

What is block caving mining method Explained by FAQ Blog

Caving is a non selective bulk mining method What is panel caving In mining Mining massive deposits …for such deposits is called panel/block caving It is used under the following conditions 1 large ore bodies of steep dip 2 massive ore bodies of large vertical extension 3 rock that will cave and break into manageable fragments

Stoping Mining Methods Metallurgist Mineral Processing Engineer

The method is applied most frequently to relatively thin tabular deposits dipping at angles greater than 50° in which few waste inclusions occur and which have fairly regular walls By carrying transverse stopes separated by pillars it may also be applied to wide tabular deposits as indicated above

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