Mid-deep hole pillarless sublevel caving mining method

Mid-deep hole pillarless sublevel caving mining method

LKAB Montanuniversität Leoben to test new mining method of raise

The method currently applied in LKAB s underground mines large scale sublevel caving has been very successful This is an effective method that enables mining of large volumes at a relatively low cost However there is some question as to how appropriate this method is for mining at ever greater depth

Digging deeper Mining methods explained Anglo American

Large scale mechanised mining methods we use include long wall mining where a long wall of coal is mined in a single slice usually by a large machine sub level caving where levels of the ore are blasted by explosives and block caving where large areas of the ore body are blasted and then extracted with the assistance of gravity

SUBLEVEL CAVING TECHNIQUE by Partha D Sharma Issuu

In sublevel caving ore is developed from a series of sublevels spaced at regular intervals throughout the orebody Mining begins at the top of the orebody A series of ring patterns is

Development of a model for economic control of loading in sublevel

Introduction Sublevel caving SLC is a mass mining method in which the ore is drilled and blasted while the waste rock caves and fills the space created by the extraction of ore Cokayne 1982 The ore body is divided into vertical intervals called sublevel intervals

sublevel caving mining method

Sublevel caving Engineered to Perform Sub level caving is a highly efficient top down underground bulk mining method Recent developments in sub level cave mining have advanced the understanding of the technique and its production performance which allow it to now be considered as a highly viable alternative to open stoping and in some

Sublevel Caving ABC 123 Testing Site / Course

You will notice there is no need to develop and undercut nor bells and drawpoints Instead a series of sublevels is developed and next the ore above the sublevel is fan or ring drilled The holes are charged and fired The broken ore is then loaded out of the sublevel using an LHD or rarely a slusher

Structural Parameter Optimization for Large Spacing Sublevel Caving in

Non pillar sublevel caving offers the advantages of simple operation high intensity mining high mechanization degree safety and reliability and relatively low mining costs [1 2 3 4] Therefore it has been widely used in ore mining at home and abroad [] The purpose of mining is to discharge ore under the overburden leading to a large loss coefficient and dilution ratio [6 7]

Sublevel mining methods SlideShare

Sublevel Stoping Considerations on the method the sublevel stoping is considered a method of extracting medium to large scale other names for the method variations bighole open stoping long hole stoping or blasthole Prof Dr Harraz Presentation sublevel stoping 3 Conditions for application of the deposit ore resistance moderate to

Types of Underground Mining Method Comparison

In most cases holes must be drilled up or flat If the stope is not filled with ore or waste stulls and platforms must be used even though the walls require no support If the raises are far apart ventilation is poor Starting an Overhand Slope —In Fig 2 are shown various methods of working the back in overhand stoping

Numerical Simulation of Independent Advance of Ore ScienceDirect

Since the non pillar sublevel caving method is detonated under a loose rock cap the capping detonation needs less explosive energy The lower stress values of the m and m advances listed in Table 3 reveal a more rational distribution of explosive energy

PDF Underground Mining Methods MineralsEd

Sublevel Caving Sublevel caving is usually carried out when mining of the orebody through an open pit method is no longer economically feasible Mining now proceeds underground underneath the open pit At first both a raise and a network of tunnels are made At different sublevels jumbos are used for long hole drilling

Sublevel cave mining unearthing new opportunities

Sublevel caving is essentially a hybrid of caving and longhole stoping methods It is flexible enough and scalable enough to enable rescoping of block caving projects into smaller projects or traditional longhole stoping projects into larger projects thereby modifying the investment character/proposition Figure 1

What every mining professional needs to know about block caving

Touted as the deep mining method of the future block caving is an underground mass mining method that allows for the bulk extraction of large relatively lower grade ore deposits that are vertical in orientation There are a number of solutions developed for caving to design model evaluate block caving and sub level caving projects

Development of a model for economic control of loading in sublevel

sublevel caving SLC draw point performance Load Haul Dump LHD Introduction Sublevel caving SLC is a mass mining method in which the ore is drilled and blasted while the waste rock caves and fills the space created by the extraction of ore Cokayne 1982 The ore body is divided into vertical intervals called sublevel intervals

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Magotteaux is the world leader in process optimization solutions for abrasive and impact applications in mining cement aggregates quarrying and power stations Magotteaux is part of Sigdo Koppers listed in Santiago Chile We are present in more than 150 countries and have a work

Research on sublevel open stoping recovery processes of inclined PLOS

The gently inclined medium thick orebody is generally viewed as difficult to extract This paper presents a sublevel open stoping using long hole with back filling method particularly for inclined medium thick orebodies This method not only changes the temporal sequence of ore stoping and realizes transportation using gravity and trackless devices but also improves production capacity and

Sublevel Caving Technique PDF Mining Drilling Rig Scribd

Description of sublevel caving method 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 The

Optimization research of structural parameters in non pillar sublevel

aiming at this problem this paper analyzes the influence mechanism of the caving step on the mining index by means of the matching relationship between the shape of caved ore body and the drawn out ore body then through the physical simulation experiment in laboratory the mining index such as the volume of pure ore drawing ore recovery ratio …

Raise Caving—A Hybrid Mining Method Addressing Current Deep Cave Mining

Cave mining progresses to depths exceeding 1000 m and ore bodies situated in competent and strong rock masses are nowadays extracted by different cave mining methods Widely applied caving methods in massive deposits are block and panel caving inclined caving and sublevel caving All caving methods have in common that rock mass caves during extraction of an ore body in a controlled way As a

Sub level caving success at Syama Mining Magazine

Sub level caving is an advanced and highly efficient low cost bulk underground mining method that provides early access to ore Mining commences at the top of the deposit and develops downwards Ore is mined from sub evels spaced at regular intervals throughout the deposit

Sub level open stoping QueensMineDesignWiki

Sublevel Open Stoping originated in the early 1900 s in iron ore mines in Michigan USA It was developed over the years from a method originally known as short hole bench and train a large scale open stoping method it is often referred to as long hole or blast hole stoping A Typical Sublevel Open Stoping Operation

Caving mining method

When the top and bottom columns are recovered by the sub column sublevel caving method they can be recovered together with the inter column Copper Mountain copper mine official contact with hydrothermal metasomatic skarn copper pyrite deposit The ore body is like a layered output the upper part is relatively large and the deep part is gradually narrowed and branched and the thickness of

Compare Stoping Methods of Mining Metallurgist Mineral Processing

Square set stoping is a flexible method it can be accommodated to very irregular ore bodies large or small and permits following and mining offshoots of ore with minimum dilution and loss of ore Waste can be sorted out and left in the gob The method can be adapted where sudden changes in dip of the deposit occur and to following

Sublevel caving Engineered to Perform Elexon Mining

Source Mining Magazine September 2024 Sub level caving is a highly efficient top down underground bulk mining method Recent developments in sub level cave mining have advanced the understanding of the technique and its production performance which allow it to now be considered as a highly viable alternative to open stoping and in some cases even to block caving

What every mining professional needs to know about block caving

Touted as the deep mining method of the future block caving is an underground mass mining method that allows for the bulk extraction of large relatively lower grade ore deposits that are vertical in orientation The method is an attractive alternative when planning to develop a new mine or to extend the life of an open pit operation

Cave Mining Techniques

Specific examples of cave mining techniques include block caving panel caving inclined drawpoint caving cut and fill mining shrinkage stopping sublevel longhole mining room and pillar mining and front caving Cave mining is typically used to mine copper copper gold iron and molybdenum

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 •

Sublevel caving mining method Epiroc YouTube

Sublevel caving is a large scale mining method suitable for large ore bodies with a steep dip and a rock mass where the host rock in the hanging wall will

Raise Caving—A Hybrid Mining Method Addressing Current Deep Cave Mining

in order to address critical rock mechanical issues in currently applied caving methods the raise caving method relies on a proven and successfully applied deep mining approach namely de stressing of rock mass with minimum amount of infrastructure placing of critical infrastructure and production infrastructure in de stressed zones …

Determination of the Ultimate Underground Mining Depth Hindawi

The movement angle of the lower iron belt is 65° The mining method of the lower iron belt has been changed from the shallow hole shrinkage mining method to the sublevel caving method The designed mining ultimate level of the shallow hole shrinkage mining is 150 m The designed sublevel height of the sublevel caving is 20 m

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