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

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 …

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

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

A new diversion drawing technique for controlling ore loss and dilution

DOI / Corpus ID 135157182 A new diversion drawing technique for controlling ore loss and dilution during longitudinal sublevel caving article{Tao2019AND title={A new diversion drawing technique for controlling ore loss and dilution during longitudinal sublevel caving} author={Ganqiang Tao and Mingxing Lu and Xiufeng Zhang and Rui Zhang and Zhonghua Zhu

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]

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

DOC Sublevel Caving Oraee

Sublevel Caving In this method the stope is divided into sublevels fairly close to each other normally with 8 15m vertical interval between each two adjacent ones These sublevels are called sublevel drifts or production drifts Production is carried out from the sublevel drifts by means of long holes above the end of the production drifts

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

PDF Sublevel Stoping Underground Mining Methods ResearchGate

Sublevel open stoping design of the O640 L651 and N 659 sub level open stopes in the 3000 orebod y of the Mount Isa copper mines Queensland Australia Department of Mining University of

Sublevel caving QueensMineDesignWiki

Sublevel Caving is one of the most advanced mining methods This method is usually undertaken when mining the orebody through an open pit is no longer economically viable In Sublevel Caving mining starts at the top of the orebody and develops downwards Ore is mined from sublevels spaced at regular intervals throughout the deposit

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Sublevel Caving Mining Method YouTube

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Analysis of the rock behaviour and the stress in surrounding rock of the roadway in pillarless mining[J] Journal of China Coal Society 1981 6 4 29 37 goaf under given deformation of the main roof in sublevel caving face[J] of reasonable coal pillar width in fully mechanized top coal caving face of deep thick coal stem[J] Chinese

Method Sublevel Caving PDF Mining Rock Geology Scribd

SUBLEVEL CAVING General Details of the Mine 1 High strata 30 100 m 2 Mineral Calcite 3 Inclination of strata 40º maximum Tools for Suitable Mining Method Selection Hartman 1987 Tools for Suitable Mining Method Selection Nicholas Perico Euskadi Mine General Shape Tabular Ore Thickness 30 100 m Ore Plunge 40 degree Grade Distribution Uniform Depth 100 m RCD Calcite 69

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

PDF Design of a new layout for sublevel caving at depth

LKAB has been mining iron ore with the sublevel caving mining method in northern Sweden for more than 60 years Throughout the years LKAB has improved this mining method to stay competitive in a tough This was made possible with the development of the in the hole and water driven hammers by LKAB Wassara Borehole accuracy is essential for

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

CN101737052A Sublevel fill mining method Google Patents

sublevel caving method without sill pillar is a kind of mining methods that present underground mine is most widely method is compared with other mining methods have

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

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

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 …

Caving Mining Method Classification and Characteristics

Sublevel caving method is mainly used in the mining of iron ore deposits most of which are newly built mines At each stage the surrounding rock should be artificially caved to form overburden rock This mining method has the advantages of high strength high efficiency low cost simple process high mechanization degree and safe production

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

Improved sublevel caving method without bottom column

1 a kind of improved sublevel caving method without sill pillar comprise substoping in route finish rock drilling explosion and ore removal it is characterized in that the ore body

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

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 •

E21C 41 Methods of underground or surface mining Layouts therefor

CN102619516A Top filled pillarless vertical end wall sublevel caving method extraction technique 08/01/2024 CN102619515A Top filled high end wall pillarless sublevel caving method extraction

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