underground mining drift

Underground mining (hard rock) - Wikipedia

OverviewMining methodsMine accessDevelopment mining vs. production miningVentilationGround supportStope and retreat vs. stope and fillOre removal

The mining method selected is determined by the size, shape, orientation and type of orebody to be mined. The orebody can be narrow vein such as a gold mine in the Witwatersrand, the orebody can be massive similar to the Olympic Dam mine, South Australia, or Cadia-Ridgeway Mine, New South Wales. The width or size of the orebody is determined by the grade as well as the distribution of the ore. The dipof the orebody also has an influence on the mining method for example a narrow horizontal vein orebod

Drift mining - Wikipedia

OverviewHistorical US drift mining (coal)Historical US drift mining (gold)Safety and environmental issuesSee alsoExternal links

Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed. A drift mine is an underground mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into the ore seam. Random House dictionary says the origin of the term "drift mine" is an Americanism, circa 1885–1890.

Mining - Horizontal openings: drifts Britannica

Mining - Mining - Horizontal openings: drifts: All horizontal or subhorizontal development openings made in a mine have the generic name of drift. These are simply tunnels made in the rock, with a size and shape depending on their use—for example, haulage, ventilation, or exploration. A drift running parallel to the ore body and lying in the footwall is called a footwall drift, and drifts ...

Drift Mining, Mining Process, Mining Techniques, Gold ...

Drift Mining. Drift mining is a process of accessing precious geological material, like coal, by cutting into the side of the earth, rather than tunneling directly downwards. Drift mines have flat entries into the coal seam from a hillside. Drift mines are different from slope mines, which have a tending opening from the surface to the coal vein.

Crosscut mining Britannica

Other articles where Crosscut is discussed: mining: Horizontal openings: drifts: the ore body are called crosscuts. A ramp is also a type of drift.

Mining Levels: Stations, Drifts, Crosscuts

Drifts are 13 by 13 feet in cross section and are timbered with standard drift sets. Where the vein is much wider or flatter, as at the Bunker Hill and Sullivan mine, crosscuts are driven from the shaft or incline to and through the ore, but more than one drift may be required to facilitate. rapid removal of

Slope Mining, Shaft Mining, Drift Mining, Mining ...

Slope Mining With fast progress of modern industry, the demand for products manufactured from metal ores has gone up literally. In order to meet this demand, the awareness of uninterrupted mining, which can sharply elevate stope productivity and cut mining costs, has become a big trend in the development of mining techniques in underground mines.

Access drifts - QueensMineDesignWiki

Drift TypesDesign ConsiderationsDetermining Service Requirements For Drift DevelopmentCost Components of Drift DevelopmentScheduling Components of Drift Development For Ore AccessOther ChallengesReferencesThe types of ore access drifts may vary depending on the mining method, however nearly all underground mining methods can categorize their ore access drifts into the following: 1. Sill (ore) Drifts 2. Haulage Drifts 3. Cross-cut Drifts 4. Exploratory Drift

How Underground Mining Works HowStuffWorks

StoryExamplesComponentsCriticismsIn 2010, people everywhere were riveted to the story of the 33 miners in Chile trapped 2,300 feet (700 meters) underground in a copper and gold mine. The miners spent more than two months there, getting food, air and letters from loved ones through bore hills drilled to their location in a protected workroom. Meanwhile, the larger-scale drilling of an escape shaft made slow progress. Finally, on Day 69, rescuers lifted each of the miner在science.howstuffworks上查看更多信息

Top ten mining terms you should know - MINING.COM

Jul 28, 2014 Back: the roof anywhere underground. 8. Drift: what you would call a tunnel. 7. Ramp: drift that runs from level down to other levels of a mine. 6. Raise: vertical drift (usually for ventilation ...

Access drifts - QueensMineDesignWiki

A drift (or access) is an excavated tunnel built for the purpose of providing a pathway for the transit of equipment, services or ore between different locations in an underground mine. Installing Rock Bolts and Screen at Rio Tinto Diavik, 2014, Lac de Gras, NT, Canada.

Top ten mining terms you should know - MINING.COM

Jul 28, 2014 Back: the roof anywhere underground. 8. Drift: what you would call a tunnel. 7. Ramp: drift that runs from level down to other levels of a mine. 6. Raise: vertical drift (usually for ventilation ...

Coal Mining, Kentucky Geological Survey, University of ...

Sep 18, 2019 There were 264 active underground mines and 240 active surface mines in Kentucky in 2000. Underground Mining. Underground modes of access include drift, slope, and shaft mining, and actual mining methods include longwall and room and pillar mining. Drift mines enter horizontally into the side of a hill and mine the coal within the hill.

(PDF) Underground mining Methods - ResearchGate

Longwall mining is a highly mechaniz ed underground mining sys tem for mining coal. It set of longwall mining equipment consists of a coal shear er mounted on convey or operating

Tutorial# 8 Underground mine design: Drift design - YouTube

Jun 23, 2016 Tutorial# 10 Underground Drift haulage cross cuts ore pass and v raise - Duration: 1:29:17. ... Types of Underground Mining and Their Applications - Duration: 6:47.

Glossary of Mining Terms - Coal Education

Drift mine – An underground coal mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into a coal seam. Drill - A machine utilizing rotation, percussion (hammering), or a combination of both to make holes. If the hole is much over 0.4m in diameter, the machine is called a borer.

Securing loads QDS pods fall from dolly car Mining ...

The NSW Resources Regulator has issued an alert to underground mines following an incident that saw a QDS pod fall from a dolly car and slide uncontrolled down the mine’s drift and was eventually arrested by spillage near the drift bottom.

Glossary of Hardrock Mining Terms

Diggers - The clothes a miner wears underground. Double-jack - 12 lb. sledge hammer. Drift - A horizontal tunnel driven along the mineral vein. Dry - The shower house for miners. Dry clothes are left there and diggers put on. Face - The end of the drift, crosscut, or tunnel, generally where the

Glossary of Mining Terms - Mineral

Drift mine — An underground coal mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into a coal seam. Drill — A machine utilizing rotation, percussion (hammering), or a combination of both to make holes. If the hole is much over 0.4m in diameter, the machine is called a borer.

Narrow vein minimum dilution case study – AMC Consultants

AMC examined the existing fleet of stope equipment (jumbos, LHDs, longhole drills, and bolters) at the mine and established optimal DB designs for the selected vein widths, dips, drift profiles (square and shanty), drift size (height and width), and mining methods, which could immediately be implemented to reduce dilution, without additional ...

Assessment of Mine Haulage Drift Safety Using ...

Mine haulage drifts are the arteries of any mine, as they are used to transport the valuable ore out of the mining zones as well as to move operators and equipment. Hence, their stability is crucial in underground mines. Drift instability could lead to serious consequences such as injuries, production delays and higher operational cost.

TOWARDS E ABSOLUTE ROUGHNESS FROM

TOWARDS EXTRACTING ABSOLUTE ROUGHNESS FROM UNDERGROUND MINE DRIFT PROFILE DATA Curtis Watson Research Assistant, The Robert M. Buchan Department of Mining, Queen’s University, Kingston, Ontario, Canada. Phone: +1 (613) 533-2230. Email: [email protected] Joshua Marshall Assistant Professor, The Robert M. Buchan Department of Mining, Queen’s

Drift mining - WikiMili, The Free Encyclopedia

Mar 25, 2019 Drift mining is either the mining of an ore deposit by underground methods, or the working of coal seams accessed by adits driven into the surface outcrop of the coal bed. [1] A drift mine is an underground mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into the ore seam. [2] Random House dictionary says the origin of the term ...

Drift and Fill – The High Value, High Recovery Mining ...

The drift and fill method can be applied to a variety of underground mining situations and is a preferred method for some orebody geometries and where ore recovery is viewed as a key to project success. This paper examines some of the critical mine planning and backfill issues involved with the drift and fill mining

Securing loads QDS pods fall from dolly car Mining ...

The NSW Resources Regulator has issued an alert to underground mines following an incident that saw a QDS pod fall from a dolly car and slide uncontrolled down the mine’s drift and was eventually arrested by spillage near the drift bottom.

Assessment of Mine Haulage Drift Safety Using ...

Mine haulage drifts are the arteries of any mine, as they are used to transport the valuable ore out of the mining zones as well as to move operators and equipment. Hence, their stability is crucial in underground mines. Drift instability could lead to serious consequences such as injuries, production delays and higher operational cost.

CDC - Mining Project - Blast Damage Control to Reduce ...

Apr 11, 2016 Ground control and safety implications of blast damage in underground mines. A practical, yet technically sound, design procedure for pre-split blasts. Evaluation of Kiruna mine drifting data using the NIOSH design approach. Use of a 3-D scanning laser to quantify drift geometry and overbreak due to blast damage in underground manned entries

Drift and Fill – The High Value, High Recovery Mining ...

The drift and fill method can be applied to a variety of underground mining situations and is a preferred method for some orebody geometries and where ore recovery is viewed as a key to project success. This paper examines some of the critical mine planning and backfill issues involved with the drift and fill mining

TOWARDS E ABSOLUTE ROUGHNESS FROM

TOWARDS EXTRACTING ABSOLUTE ROUGHNESS FROM UNDERGROUND MINE DRIFT PROFILE DATA Curtis Watson Research Assistant, The Robert M. Buchan Department of Mining, Queen’s University, Kingston, Ontario, Canada. Phone: +1 (613) 533-2230. Email: [email protected] Joshua Marshall Assistant Professor, The Robert M. Buchan Department of Mining, Queen’s

UNDERGROUND MINING

52 Pike River Mine drift re-entry on track 56 Social licence to operate: regaining community trust Special feature: Underground mining 60 The new statutory position of ventilation officer in Queensland 66 Mining automation human-systems integration – CMOC-Northparkes case study 72 A safer, more productive future for underground mines

Underground Mining Transportation Systems

CIVIL ENGINEERING – Vol. II - Underground Mining Transportation Systems - K. Matsui ©Encyclopedia of Life Support Systems (EOLSS) 2.2. Inclined Shafts or Inclined Drifts Many underground mines use an inclined shaft fo r the transport of pe rsons, materials and equipment to and from the underground. Figure 3 shows an inclined drift at Ikeshima

Driftrunner - Impact Mining Underground Mining Equipment ...

Impact Mining Equipment has, since 2007 become a leading provider of equipment hire, parts and consumables to the underground black coal industry in Australia. Our focus has, and continues to be, on providing products and services of the highest quality in the shortest possible response time-frame.

Glossary of Mining Terms - Mineral

Drift mine — An underground coal mine in which the entry or access is above water level and generally on the slope of a hill, driven horizontally into a coal seam. Drill — A machine utilizing rotation, percussion (hammering), or a combination of both to make holes. If the hole is much over 0.4m in diameter, the machine is called a borer.

Narrow vein minimum dilution case study – AMC Consultants

AMC examined the existing fleet of stope equipment (jumbos, LHDs, longhole drills, and bolters) at the mine and established optimal DB designs for the selected vein widths, dips, drift profiles (square and shanty), drift size (height and width), and mining methods, which could immediately be implemented to reduce dilution, without additional ...

What are the disadvantages of underground mining - Answers

underground mining is done when the rocks, minerals of gemstones are too far underground to get out with surface mining some kinds of underground mining are Borehole Mining Drift Mining

Excavation Methods - underground COAL

This gives a more continuous process and should give a good drift profile. The use is limited by the grades involved (maximum 1:4) and the hardness of the material to be cut (maximum 60-80 MPa UCS). Use of a tunnel boring machine.

Major Mines Projects Meikle Mine

Mine Type: Underground: Commodities: Gold; Mining Method: Drift Fill; Transverse stoping; Cemented backfill; Processing: Pressure oxidation; Resin in leach (RIL) Carbon in leach (CIL) Thiosulfate (reagent) Roasting; Mine Life: 9 years (as of Jan 1, 2014)

How to select equipment for underground mining B2B ...

Nov 25, 2017 An in-depth report on how to select equipment for underground mining along with necessary solutions provided. T o meet the demand of coal in domestic market, Government of India (GoI) has set an ambitious target for the coal companies to produce one billion tonne of coal by 2020 from the present level of 655 million. Coal India Limited (CIL), a state-owned enterprise and the