sublevel caving mining method

sublevel caving mining method

Sublevel cave mining: unearthing new opportunities ...

2021-3-24 · Sublevel caving: unearthing new opportunities . The known resource base for base metals is increasingly comprised of large scale, low-grade deposits, situated at increasing depths where underground cave 1 mining methods are the only viable means of economic extraction.. In the spectrum of underground mining methods, caving methods are the lowest cost and most productive.

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Sublevel Caving Technique | PDF | Mining | Drilling Rig

2020-6-18 · Sublevel Caving Technique - Free download as PDF File (.pdf) or read online for free. An underground mining method used in large, steeply dipping orebodies

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METHODS IN MINING BY SUBLEVEL CAVING - HARRY

A method in mining by sublevel caving in which in a development phase are driven haulage drifts or shafts and from said drifts or shafts are driven cross-cuts in an orebody with a spacing vertically and horizontally suitable from an economical and technical point of view, from which cross-cuts one or more longitudinal drifts are driven in said orebody, wherein said cross-cuts are driven ...

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Method Sublevel Caving | PDF | Mining | Rock (Geology)

2019-5-10 · 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

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(PDF) Longwall; Sublevel Caving and Block Caving ...

Longwall Longwall in coal Longwall in Hard Rock Sublevel Caving Characteristics of the ore body and mining method Development Production Equipments Used Block Caving

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Sublevel Caving - Oraee

2016-9-19 · Caving Mining Methods. Generally, caving methods extract ore, using the principle of fracturing the ore body and the rocks around it, inducing breaks in the whole strata and hence drawing the manageable ore, under more or less controlled conditions. ... Sublevel Caving. In this method, the stope is divided into sublevels, fairly close to each ...

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A study of gravity flow principles of sublevel caving ...

2017-10-25 · The loss and dilution of ore by sublevel caving mining method is influenced by gravity flow principles of caved granular materials (rocks). Gravity flow of broken rock (muck) in dipping narrow veins is complex. By combined use of dimensional analysis and similitude studies in physical modelling coupled with numerical simulation, this paper reports results of a study of gravity flow of muck in ...

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Paper: Design of a new layout for sublevel caving at depth

Abstract: 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 international iron ore market. Improvements in drilling and blasting technology have helped LKAB increase the scale of sublevel caving and therefore decrease its mining costs in ...

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METHODS IN MINING BY SUBLEVEL CAVING - HARRY

A method in mining by sublevel caving in which in a development phase are driven haulage drifts or shafts and from said drifts or shafts are driven cross-cuts in an orebody with a spacing vertically and horizontally suitable from an economical and technical point of view, from which cross-cuts one or more longitudinal drifts are driven in said orebody, wherein said cross-cuts are driven ...

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Method Sublevel Caving | PDF | Mining | Rock (Geology)

2019-5-10 · 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

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8.4.2b Sublevel Caving | ABC 123: Testing Site / Course

2010-8-4 · The LHD’s travel to ore passes where the ore is dumped and then collected at a lower haulage level. 8.4.9 Diagram of a sublevel caving operation. Atlas Copco Underground Methods. The world’s largest sublevel caving mine is located above the Arctic Circle in Sweden. The Kiruna Mine is mining the Kirunavaara iron orebody.

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Sublevel caving method layout [1]. | Download Scientific ...

Due to the influence of geological conditions, orebody distribution characteristics, and mining technology, most of these underground iron mines are mined by the sublevel caving method [1] [2][3 ...

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Production Scheduling in Sublevel Caving Method with the ...

2019-2-22 · Sublevel caving is one of the main underground mining methods for hard rock mining and there are limited studies about its long-term production scheduling. In this paper, an integer linear programming (IP) model with the objective of net present value (NPV) maximization is developed for production scheduling that is suited for sublevel caving ...

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Design of a new layout for sublevel caving at depth

run-of-mine and Malmberget mine about 14 Mt. Sublevel caving is the mining method used at these mines. LKAB has a history of using sublevel caving at its mines, and throughout the years it has introduced significant improvements to keep production costs at desirable levels. It should be mentioned that other mining

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Paper: Design of a new layout for sublevel caving at depth

Abstract: 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 international iron ore market. Improvements in drilling and blasting technology have helped LKAB increase the scale of sublevel caving and therefore decrease its mining costs in ...

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Parameters influencing full scale sublevel caving material ...

Introduction. Sublevel caving (SLC) is a mass mining method based upon the utilisation of gravity flow of blasted ore and caved waste rock [1]. The method functions on the principle that ore is fragmented by blasting, while the overlying host rock fractures and caves

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Types of Underground Mining Method Comparison

2017-3-16 · Block caving is an extreme case of sublevel caving in which instead of a back of ore 5 to 10 ft. thick, one 50 ft. thick is undermined and allowed to cave. The method is illustrated in Fig. 7. After the bottom of the block, or panel, is cut up into pillars by

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Underground Mining Methods

2021-8-18 · slice. Mining continues upwards towards the surface until the ore body is depleted. Sublevel Caving Sublevel caving is usually carried out when mining of the ore body 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.

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8.4.2b Sublevel Caving | ABC 123: Testing Site / Course

2010-8-4 · The LHD’s travel to ore passes where the ore is dumped and then collected at a lower haulage level. 8.4.9 Diagram of a sublevel caving operation. Atlas Copco Underground Methods. The world’s largest sublevel caving mine is located above the Arctic Circle in Sweden. The Kiruna Mine is mining the Kirunavaara iron orebody.

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Sub Level Caving - PHDessay

2017-3-3 · Experience from LKAB, Sweden - Sub-level caving (SLC) is an important mass mining method, used at LKAB. The caved rock or debris at the SLC interface reduces the fragmentation and the swelling of the blasted ring and it dissipates the explosive energy. These phenomena may immobilize the blasted ring, causing ore losses.

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Method of underground mining sublevel caving on ...

Method of underground mining sublevel caving on samariterbund ore. E21C41/22 - for ores, e.g. mining placers. (57) Abstract: The invention relates to the mining industry and can be used in underground mining of massive ore deposits, including kimberlite pipes in permafrost zones. Method of underground mining sublevel caving on tamakaimoana ore ...

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Production Scheduling in Sublevel Caving Method with the ...

2019-2-22 · Sublevel caving is one of the main underground mining methods for hard rock mining and there are limited studies about its long-term production scheduling. In this paper, an integer linear programming (IP) model with the objective of net present value (NPV) maximization is developed for production scheduling that is suited for sublevel caving ...

Read More
Parameters influencing full scale sublevel caving material ...

Introduction. Sublevel caving (SLC) is a mass mining method based upon the utilisation of gravity flow of blasted ore and caved waste rock [1]. The method functions on the principle that ore is fragmented by blasting, while the overlying host rock fractures and caves

Read More
Optimum Sublevel Height and Drift Spacing in Sublevel

2020-1-14 · In September 2007, the mine decided to adopt the underground mining method, and started the shaft development for the sublevel caving mine with a production scale of 75,000 tons/year. Subsequently, in August 2012, the mine began partial stoping work. The sublevel height is divided into 13 and 14 m and the drift spacing is chosen at 12.5 m.

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Design of a new layout for sublevel caving at depth

run-of-mine and Malmberget mine about 14 Mt. Sublevel caving is the mining method used at these mines. LKAB has a history of using sublevel caving at its mines, and throughout the years it has introduced significant improvements to keep production costs at desirable levels. It should be mentioned that other mining

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12. Mining methods and method selection

2018-1-30 · 12.4 Underground mining method •Sublevel caving-Induces free displacement of the country rock overlying an orebody.-Ore and waste are fragmented using blast holes drilled upwards from headings.-Explosive consumption in blasting is high.-Mining progresses downwards in an orebody, with each sublevel being progressively eliminated as mining ...

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Underground Mining Methods

2021-8-18 · slice. Mining continues upwards towards the surface until the ore body is depleted. Sublevel Caving Sublevel caving is usually carried out when mining of the ore body 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.

Read More
Block Cave Underground Mine - ESDM

2020-10-21 · 6 What and Why Block Caving? What : Block (gravity) caving is a bulk underground mining method, which allows large low-grade deposits to be mined underground. This method involves undermining the orebody to make it collapse under its own weight into a series of chambers from which the ore extracted.

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