underground mining shrinkage methods

UNDERGROUND MINING METHODS

 · Subject :GEOLOGYCourse :ENERGY RESOURCES AND MINERAL EXPLORATIONSKeyword : SWAYAMPRABHA

Types of Underground Mining Method Comparison

 · Underhand Stoping Mining Method The method of underhand stoping in which the ore is drawn to the level above (B, Fig..1), is called Cornish stoping. It finds application only when it is necessary to mine a lens of good ore below a level and it is not practicable or financially possible to do the necessary development to come up from underneath.

Underground mining methods handbook (Book) | …

 · @article{osti_6831532, title = {Underground mining methods handbook}, author = {Hustrulid, W A}, abstractNote = {Sections discuss: mine design considerations; stopes requiring minimum support (includes room-and-pillar mining and sublevel stoping); stopes requiring some additional support other than pillars (includes shrinkage stoping, cut-and-fill stoping, undercut-and-fill mining…

Underground Mining Methods – EXCELLENCE IN …

Underground mining is the process of extracting minerals and ores that are located too far underground to be mined efficiently using surface mining methods. The primary objective of underground mining is to extract ore safely and economically while minimizing handling of waste rock.

12. Mining methods and method selection

12.4 Underground mining method •Shrink (Shrinkage) stoping-Applied to vertical or subverticaladvance of mining in a stope.-Broken ore used as both a working platform and temporary support.-Drilling & blasting ®ore extraction ®scaling & supporting.-30~35% of

Shrinkage and Vertical Crater Retreat Stoping

 · Permission of the author and publisher is required for any other usage. Please see [email protected] for contact details. Topic 5: Underground Mining Methods Shrinkage stoping Vertical Crater Retreat stoping Prof. Dr. H.Z. Harraz Presentation 2.

SECTION 10 SHRINKAGE METHODS Mike Turner Australian Mining …

Shrinkage mining was a common stoping method prior to mechanised mining and the introduction of hydraulic fill. Sub-level stoping, cut and fill mining and sub-level caving have generally replaced shrinkage mining in Australia, Europe and Canada. The method is

Underground Mining Methods and Equipment

surface is termed underground mining. Underground mining methods are usually employed when the depth of the deposit and/or the waste to ore ratio (stripping ratio) are too great to commence a surface operation. Once the economic feasibility has been

Underground Mining Methods Research Papers

View Underground Mining Methods Research Papers on Academia for free. Method room and pillar sizes are key factors for safe mining and their recovery in open-stop mining. This method is advantageous due to its simplicity and requirement of little information ...

Lesson 8.3: Mining by Unsupported Methods | ABC 123: …

Lesson 8.3: Mining by Unsupported Methods You will recall from Lesson 4.3 of Module 4 that underground mining methods are traditionally placed into three classes: unsupported, supported, and caving methods.These classes reflect the competency of the orebody ...

Techniques in Underground Mining

Methods for Underground Mining The choice of mining method is influenced by the shape and size of the ore deposit, the value of the contained minerals, the composition, stability and strength of the rock mass and the demands for production output and safe working conditions (which sometimes are …

Appendix C Mining Methods

Appendix D: Description of Mining Methods Shrinkage Stoping Shrinkage stoping is applicable to ore zones that are dipping at least 55 degrees and that range in width from roughly 1.2 to 4.5 meters. The enclosing waste rock must be competent and not subject to

Here are the Types of Underground Mining and Their …

The method to be used for underground mining depends on the concentration of ore, strength of the surrounding rock, and the various risks involved. ScienceStruck explains what these methods are, with the applications of each one.

Lecture 4: Underground Mining

 · Underground mining, Underground mining methods Lecture 4: Underground Mining 1. Hassan Z. Harraz [email protected] 2010- 2011 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power ...

Underground Mining Methods

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 at

Underground metal mining methods

View Underground metal mining methods - I.pdf from MINING 12 at Indian School of Mines. UNDERGROUND METAL MINING METHODS (Classification, selection imperatives, cut and fill, shrinkage …

What Are The Primary Methods of Underground …

 · Primary Methods of Underground Mining Sub Level Caving: It is currently one of the most innovative mining methods in the industry. ... Shrinkage: It follows a similar method to cut and fill, however rather than detonating and refilling, the area exposed is left open ...

Underground mining – block caving, bore hole, drift fill, …

Retreat mining is a process that recovers the supporting coal pillars, working from the back of the mine towards the entrance, hence the word retreat.Room and pillar mining advances inward, away from the entrance of the mine. Other underground mining methods include Hard rock mining, bore hole mining, drift and fill mining, long hole slope ...

Geotechnical factors

Chapter 19: Shrinkage stoping at the Mouska Mine. In: Underground Mining Methods: Engineering Fundamentals and International Case Studies (eds W. A. Hustrulid and R. L. Bullock), 189-194. Society for Mining, Metallurgy and Exploration: Littleton, Colorado.

Shrinkage stoping | Britannica

In mining: Shrinkage stoping. Shrinkage stoping is used in steeply dipping, relatively narrow ore bodies with regular boundaries. Ore and waste (both the hanging wall and the footwall) should be strong, and the ore should not be affected by storage in the stope. Read More.

Design & Operating Principles in Caving Methods

SUMMARY - UNDERGROUND MINING METHODS Method Tonnes / Avg. Tonnes / Relative Mining Manshift Day Milled Cost/Tonne Resuing 0.20 - 0.50 50 - 100 + 70+ Shrinkage 20 - 28 200 - 800 20 - 50 Cut and fill 12 - 48 500 - 1500

[PDF] Underground Mining Methods Handbook | …

Underground Mining Methods Handbook In Order to Read Online or Download Underground Mining Methods Handbook Full eBooks in PDF, EPUB, Tuebl and Mobi you need to create a Free account. Get any books you like and read everywhere you want. Fast

Shrinkage Mining of the West Reef Resource, Prestea Underground Mine, Ghana

Shrinkage Mining of the West Reef Resource, Prestea Underground Mine, Ghana Effective Date: December 18, 2014 Golden Star Resources Ltd. 150 King Street West Sunlife Financial Tower, Suite 1200 Toronto ON, M5H 1J9, Canada Qualified Persons

METODE CUT AND FILL DAN SHRINKAGE FULL STOPING …

Purpose use of methods cut and fill and shrinkage full stoping, among which Know and exposure to exploitation and infrastructure mined underground by the method of cut and fill and methods of shrinkage, Adding insights about science and emerging

Underground Mining Methods

2 Underground Mining Methods Teacher Information drilling of the now higher roof continues. The roof is blasted till it is so high that it cannot be reached by a jumbo. Then a jumbo working in a higher elevation drift is used to intersect the stope. After blasting, the ore ...

4.3.2: Underground Mining Methods | ABC 123: Testing …

4.3.2: Underground Mining Methods. Underground mining methods become necessary when the stripping ratio becomes uneconomical, or occasionally when the surface use of the land would prohibit surface mining. Underground methods are traditionally broken into three classes: unsupported, supported, and caving methods.

Underground Mining Methods (3.1)

 · Underground Mining Methods (3.1) - . Underground Mining Methods (3.1) Watch later. Share. Copy link. Info. Shopping. Tap to unmute. If playback doesn''t begin shortly, try restarting your ...

Stoping

In shrinkage stoping, mining proceeds from the bottom upwards, in horizontal slices (similar to cut and fill mining), with the broken ore being left in place for miners to work from. Because blasted rock takes up a greater volume than in situ rock (due to swell factor ), some of the blasted ore (approximately 40%) must be removed to provide working space for the next ore slice.

mining

mining - mining - Underground mining: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the ore through surface mining becomes prohibitive, and underground techniques must be considered. Counting against underground mining are the costs, which, for each ton of material mined, are much higher underground than on …

Shrinkage stoping

Shrinkage stoping is a mining method used for steeply dipping, narrower ore bodies with self supporting walls and ore. It is an overhand mining method that relies on broken ore being left in the stope to be used as the "working floor" and to support the walls.

(PDF) UNDERGROUND MINING METHODS | Timileyin …

Fig. 4: Shrinkage stoping 2.2 Bulk Mining Methods Where the ore body is large, massive and has regular shape, selective mining is not necessary nor desirable from a cost perspective. The ore body can be efficiently mined in large volumes and with higher productivity using larger underground equipment and the bulk mining methods.

Coalbed methane emissions and drainage methods in …

 · This review work could deliver meaningful knowledge of methane emissions and drainage methods in underground mining to related researchers and mining engineers. Meanwhile, this study is expected to identify the research gap in underground CBM emissions and drainage areas and indicate the future research direction.

Methods of Underground Mining — Bit Service Company

 · Shrinkage stoping is similar to the cut and fill method, except instead of filling each level to act as a support, the blasted, broken ore is left in the resulting space to act as a support for the next level. After all the levels are blasted, the ore is then removed. This underground mining method is a good option for steep ore bodies.

Shrinkage stoping

Shrinkage stoping - QueensMineDesignWiki

UNDERGROUND MINING

UNDERGROUND MINING. Underground methods — unsupported, sup­ported, and caving — are differentiated by the type of wall and roof supports used, the configuration and size of production openings, and the direction in which mining operations progress. The unsupported methods of mining are used to extract mineral deposits that are roughly ...

Overview of Underground mining business

Underground Mining methods are adopted. 3) Open pit mines might shift to underground methods as they get deeper. 1.Magmatic deposit 2.Hydrothermal deposit 1) Typical minerals: Platinum, Chromium, Titanium, Magnetite, etc. Generation process of ...

The Best Methods for Underground Mining

 · There are several best and well-known methods of underground mining. Mines are hazardous places where people risk their lives to get those jobs done. Explosions, cave-ins, and fire hazards are some of the deadly concerns for miners. There are many

Types of Mining Methods | Sell Side Handbook

 · Shrinkage stoping was popular and important in the days when few machines were used in underground mining. It is of little importance today due to its drawbacks – that is, it is a labor-intensive method with dangerous working conditions and limited productivity.

Underground Mining Methods: Engineering …

Underground Mining Methods. : W. A. Hustrulid, William A. Hustrulid, Richard C. Bullock, Richard L. Bullock. SME, 2001 - Technology & Engineering - 718 pages. 5 Reviews. Underground Mining Methods presents the latest principles and techniques in use today. Reflecting the international and diverse nature of the industry, a series of mining case ...