Last edited by Arashizuru
Wednesday, August 5, 2020 | History

2 edition of Mining methods used in the underground tunnels and test rooms at Stripa found in the catalog.

Mining methods used in the underground tunnels and test rooms at Stripa

Brandt Andersson

Mining methods used in the underground tunnels and test rooms at Stripa

by Brandt Andersson

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  • 7 Currently reading

Published by Dept. of Energy, Lawrence Berkeley Laboratory, Earth Sciences Division, for sale by the National Technical Information Service] in Berkeley, Calif, [Springfield, Va .
Written in English

    Subjects:
  • Mining engineering -- Sweden.

  • Edition Notes

    Statementby B. Andersson, P. A. Halén, Ställbergsbolagen.
    SeriesTechnical information report (Swedish-American Cooperative Program on Radioactive Waste Storage in Mined Caverns in Crystalline Rock) -- no. 8., LBL ; 7081, LBL (Series) -- 7081.
    ContributionsHalén, P. A., Svensk kärnbränsleförsörjning AB., Ställbergsbolagen., Lawrence Berkeley Laboratory. Earth Sciences Division.
    The Physical Object
    Paginationv, 14 p. :
    Number of Pages14
    ID Numbers
    Open LibraryOL17650504M

    Tunnels and underground excavations - Tunnels and underground excavations - Future trends in underground construction: Unexpectedly rapid increases in urbanization throughout the world, especially since World War II, have brought many problems, including congestion, air pollution, loss of scarce surface area for vehicular ways, and major traffic disruption during their construction. Underground mining is used to recover ores that are deeper into Earth’s surface. Miners blast and tunnel into rock to gain access to the ores. How underground mining is approached – from above, below, or sideways – depends on the placement of the ore body, its depth, concentration of ore, and the strength of the surrounding rock.

      That’s right, correct answers are the only things that we can use to break through this wall. We’ve got some samples also: What great European civilization was the one that developed large scale mining methods? What was the primary cause for the silver crisis of ? In what century did mining in the Us become prevalent? Take your time.   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 studies is presented covering the commodity range from iron ore to diamonds extracted by operations located in all corners of the s: 9.

    Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is a 'pit', and. Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef or placer deposits form a mineralized package that is of economic interest to the miner. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay.


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Mining methods used in the underground tunnels and test rooms at Stripa by Brandt Andersson Download PDF EPUB FB2

MINING METHODS USED IN THE UNDERGROUND TUNNELS AND TEST ROOMS AT STRIPA. Author(s): Andersson, B. et al. Main Content Metrics Author & Article Info. Main Content. Download PDF to View View Larger. Thumbnails Document Outline Attachments. Previous. Next. Highlight all Match case.

Whole by: 4. mining methods used in the underground tunnels and test rooms at stripa By B. Andersson Topics: General and MiscellaneousAuthor: B. Andersson. 2) Room (Bor d)-and-Pillar mining (or con tinuous mining) method It is the most common supported pillar method, designed and used primarily for mining flat-lying.

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 studies is presented covering the commodity range from iron ore to diamonds extracted by operations located in all corners of the world.

Industry experts have contributed 77 chapters/5(5). Ramps(inclined tunnels) are excavated to connect the surface to the underground orebody. Drifts (hori- zontal tunnels) are excavated at different elevations to surround the orebody. Next, stopes(tunnels that have direct access to mining the ore) are mined to gain access to the ore.

All tunnels are excavated by drilling and blasting. Solution mining includes both borehole mining, such as the methods used to extrac t sodium chloride or sulfur, and leaching, either through drillholes or in dumps or heap s on the surface.

Excavation of the ground within the tunnel bore may be either semicontinuous, as by handheld power tools or mining machine, or cyclic, as by drilling and blasting methods for harder rock. Here each cycle involves drilling, loading explosive, blasting, ventilating fumes, and excavation of the blasted rock (called mucking).

Strip Mining: Ore is removed in parallel strips. Mountaintop Removal: Top of a mountain is blasted to remove deep ore. Dredging: Ore is removed from a river bottom.

The main methods of underground mining are: Room and Pillar Mining: Removing ore, while leaving behind some for roof support. Do you really know what mining is all about.

Have you ever seen the mining process. If not, then take this quiz to test your knowledge and learn about the mining process and methods of extraction. Mining is a lengthy extraction process of minerals like iron ore, metals, coal, gemstones, limestone etc. Even petroleum, water, and gold is the part of the mining process which is time taking.

Read. The tunnels that are dug are horizontal and are called mining was really dangerous in the early days. Many tunnels caved intrapping and killing was often mined this way. Ore is rock with minerals inside of it. Drift Mining 7. Hard Rock MiningHard rock mining is a kind of underground mining.

Get this from a library. Mining methods used in the underground tunnels and test rooms at Stripa. [Brandt Andersson; P A Halén; Svensk kärnbränsleförsörjning AB.; Ställbergsbolagen.; Lawrence Berkeley Laboratory. Earth Sciences Division.]. Room and pillar (variant of breast stoping), is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars.

To do this, "rooms" of ore are dug out while "pillars" of untouched material are left to support the roof ating the size, shape, and position of pillars is a complicated procedure, and is an area of. Solution mining Occurs when a deposit is very deep and the resource can be dissolved in liquid Narrow borehole is drilled in ground to reach mineral deposit and water/acid/another liquid is injected in borehole to leach resource and dissolve in liquid.

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.

The equipment to be used is determined by the method of mining to be used and the form of underground access to be employed. Drills, excavators, and mining shovels are just but some of the equipment used for underground access.

Trucks are also used for transport purposes whens soil dug from underground have to be moved. The underground mining methods we use include room and pillar, narrow vein stoping and large-scale mechanised mining.

Room and pillar mining is a style of mining where tunnels are driven in a chess board pattern with massive square pillars between them. Underground Mining Methods Handbook by W.A. Hustulid, Editor Society of Mining Engineers - Pages.

General Mine Design Considerations. Block caving is essentially the underground version of open-pit mining. It’s the only underground mining method that can reach similar production rates to surface mining operations, up to overtonnes per day.

The method involves undermining an ore body, then allowing it to collapse under its own weight. Drilling core, the most common method of determining underground conditions, only recovers less than % of the excavated volume of the tunnel on a typical project in the most exhaustive survey, which leaves a great deal of room for uncertainty.

Site Characterization. Purchase Underground Mining Methods and Technology, Volume 1 - 1st Edition. Print Book & E-Book. ISBN. TBMs have been used in mining operations from time to time almost as long as TBMs have been operation.

Unfortunately, they have not been nearly as successful as in civil tunneling. The earliest application of TBMs in mining dates back to late 50’s.

This was followed by several attempts in 60’s and 70’s in other underground mining operations.1. Underground Mining Methods Classification of Underground Mining Methods Mineral production in which all extracting operations are conducted beneath the ground 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.The room and pillar method involves ventilating large stopes on a single level, and the modified inmore» The basic ventilation problems concerning these methods and some of the inherent ventilation problems such as methane, diesel exhaust, blasting fumes and dust that probably will be encountered in underground oil shale mining are discussed.