longwall mining method ppt

longwall mining method ppt

  • Longwall Mining PowerPoint PPT Presentations - PowerShow

    Longwall Mining PowerPoint PPT Presentations. All Time. Show: Recommended. Sort by: COAL MINE PROJECT ... Longwall Mining Longwall mining is a more efficient method of removing coal from a subsurface seam. PowerPoint PPT presentation free to download . Trigger Action Response Plans in Underground Coal Mines Tips, Tricks and Pitfalls - Title: Table 1. Risk of Death by various causes

  • Longwall Mining - SlideShare

    2010-04-30  LONGWALL GENERAL LAYOUT TOP Gate FACE Dip direction Bottom Gate - Longwall mining method includes drivage of two long roadways in coal and joining them at the end by a perpendicular drivage forming a face. 19. Different Longwall Methods 1. Longwall Advancing 2.

  • Longwall Mining Method Ppt - dahmen-training.de

    Longwall Mining Method Ppt. Displaying Powerpoint Presentation on ground control in mining morgantown wv introduction longwall is an underground available to view or download Download ground control in mining morgantown wv introduction longwall is an underground PPT for free. Get a Quote Online Message. Jaw Crusher . Impact Crusher. Cone Crushers. Sand Maker. Ball Mill. Raymond Mill. Longwall ...

  • Longwall Mining Method and Design

    Table of ContentsLongwall Mining Design FactorsSeam SequencingInteraction for Descending OrderPressure Bulb TheoryArching Theory in MiningInteraction for Ascending OrderSubsidence TroughInterseam ShearingSimultaneous and Random Orders of ExtractionGate Road Pillar DesignYield Pillar ApproachConventional Longwall Mining ApproachOther Design ConsiderationsOrientation of

  • Longwall Mining Powerpoint Ppt Presentations

    Longwall mining powerpoint ppt presentations all time show recommended sort by coal mine project opportunity nametype of project name of coal mining company name of you should be able to describe several methods of mining describe important potential environmental consequences of mining define . Details. Caving Underground Mining Methods Longwall Sublevel. Oct 23 2014 caving underground mining ...

  • longwall mining method ppt - mgcricket.co.za

    Recommended longwall mining method ppt. economic development in india mining ppt, impact breaker . Longwall Mining Overview Introduction . LONGWALL MINING Overview. In the method of secondary extraction known as longwall mining a relatively long mining face (typically in the range 100 to 300m but may be longer) is created by driving a roadway at right angles between two roadways

  • Longwall PowerPoint PPT Presentations - PowerShow

    Longwall Mining Longwall mining is a more efficient method of removing coal from a subsurface seam. PowerPoint PPT presentation free to download . BEST PRACTICES FOR NOISE CONTROL - John Craddock - District 11. Nationwide Effort. Longwall Noise Data thru August 2000 ... Deer Creek (Spring/ Summer 2001) Verify Compliance. Sound Damping ... John Craddock - District 11.

  • Longwall Mining Overview Introduction underground COAL

    The benefits of longwall mining compared to other methods of pillar extraction are: Permanent supports are only needed in the first workings portion and during installation and recovery operations. Other roof supports (longwall chocks or shields on modern longwalls) are

  • Longwall Mining - YouTube

    2012-05-09  clearcutmining/ This video describes the process of underground longwall mining used in the Australian coal mining industry.

  • Author: Aram Drake
  • Longwall mining - Wikipedia

    Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 0.6–1.0 m (2 ft 0 in–3 ft 3 in) thick). The longwall panel (the block of coal that is being mined) is typically 3–4 km (1.9–2.5 mi) long and 250–400 m (820–1,310 ft) wide.

  • Longwall Mining Method Ppt - dahmen-training.de

    Longwall Mining Method Ppt. Displaying Powerpoint Presentation on ground control in mining morgantown wv introduction longwall is an underground available to view or download Download ground control in mining morgantown wv introduction longwall is an underground PPT for free. Get a Quote Online Message. Jaw Crusher . Impact Crusher. Cone Crushers. Sand Maker. Ball Mill. Raymond Mill. Longwall ...

  • Longwall PowerPoint PPT Presentations - PowerShow

    Longwall Mining Longwall mining is a more efficient method of removing coal from a subsurface seam. PowerPoint PPT presentation free to download . BEST PRACTICES FOR NOISE CONTROL - John Craddock - District 11. Nationwide Effort. Longwall Noise Data thru August 2000 ... Deer Creek (Spring/ Summer 2001) Verify Compliance. Sound Damping ... John Craddock - District 11.

  • Longwall Mining - an overview ScienceDirect Topics

    The longwall mining method was used and mined the whole seam thickness by the top coal caving method. The mining depth was 372.1~481.6 m with an average of −430 m. The average dip angle was 9°. Coal mined in the area was 6~8.25 m thick. The 220 kV HV transmission line is on the surface above panel 21081. Its forward direction forms an angle of 11° with the panel face advance direction. The ...

  • Longwall method coal mining Britannica

    Other articles where Longwall method is discussed: mining: Longwall mining: In the longwall system the ore body is divided into rectangular panels or blocks. In each panel two or more parallel drifts (for ventilation and ore transport) are driven along the opposite

  • Longwall Mining Powerpoint Ppt Presentations

    Longwall mining powerpoint ppt presentations all time show recommended sort by coal mine project opportunity nametype of project name of coal mining company name of you should be able to describe several methods of mining describe important potential environmental consequences of mining define . Details. Caving Underground Mining Methods Longwall Sublevel. Oct 23 2014 caving underground mining ...

  • Topic 9: Mining Methods Part V- Underground Mining

    A coal mining method that accounts for less than 1% of deep coal production, Shortwall involves the use of a continuous mining machine with moveable roof supports, similar to longwall .

  • Viewpoint Mining Magazine - Longwall Top-Coal Caving

    Broadmeadows uses the punch longwall mining method, accessing coal seams directly from the pit created by the original surface mine. While longwall operations began in 2005, Broadmeadows did not adopt LTCC technology until 2013. Today, the mine uses Cat longwall equipment and technologies to produce 4.5 million tonnes (4.9 million tons) of coal per year. LTCC has also increased the mine’s ...

  • Principles of Longwall Mining - YouTube

    2016-04-12  This video provides a basic description of the long-wall mining method for extracting coal underground. It includes an explanation of the different products/...

  • Author: Wyoming Machinery Company
  • (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

  • Introduction to Longwall Mining and Subsidence ver2

    The Longwall Mining Process Fig. 1.1, below, shows a cutaway diagram of a typical longwall mine. The main features of the mine are indicated in the key below the diagram. The longwall face is indicated by the number 8 in the diagram. Fig. 1.1 Cutaway View of a Typical Longwall Mine In longwall mining, a panel of coal, typically around 150 to 300 metres wide, 1000 to 3500 metres long and 2 to 5 ...

  • Longwall Mining Method Ppt - dahmen-training.de

    Longwall Mining Method Ppt. Displaying Powerpoint Presentation on ground control in mining morgantown wv introduction longwall is an underground available to view or download Download ground control in mining morgantown wv introduction longwall is an underground PPT for free. Get a Quote Online Message. Jaw Crusher . Impact Crusher. Cone Crushers. Sand Maker. Ball Mill. Raymond Mill. Longwall ...

  • Introduction to Longwall Mining and Subsidence ver2

    The Longwall Mining Process Fig. 1.1, below, shows a cutaway diagram of a typical longwall mine. The main features of the mine are indicated in the key below the diagram. The longwall face is indicated by the number 8 in the diagram. Fig. 1.1 Cutaway View of a Typical Longwall Mine In longwall mining, a panel of coal, typically around 150 to 300 metres wide, 1000 to 3500 metres long and 2 to 5 ...

  • Viewpoint Mining Magazine - Longwall Top-Coal Caving

    Broadmeadows uses the punch longwall mining method, accessing coal seams directly from the pit created by the original surface mine. While longwall operations began in 2005, Broadmeadows did not adopt LTCC technology until 2013. Today, the mine uses Cat longwall equipment and technologies to produce 4.5 million tonnes (4.9 million tons) of coal per year. LTCC has also increased the mine’s ...

  • Control of Airborne Respirable Dust Hazards

    RESPIRABLE DUST TRAINING PROGRAM Section 8 LONGWALL DUST CONTROL METHODS Sources of Longwall Dust Dilution reduces the ratio of the amount of dust in the air Adequate Air Prevent Leakage Gob Curtain Cut-Out Curtain Use of Belt Air Longwall Dust Problems Inadequate air volume and air velocity Insufficient water volume and pressure Poorly designed external spray systems

  • Introduction to Longwall Mining Engineering Systems ...

    Longwall mining is one of the widely used coal extraction methods that involve the use of several sophisticated types of machinery to mine: a continuous seam of coal block which can be up to 450m wide and 7km long. To achieve a productive operation, multiple pieces of equipment must be fully integrated to work as a single entity. Such equipment includes; Longwall shearer Longwall armoured face ...

  • Longwall Ventilation Introduction underground COAL

    punch longwall mining ; shortwall mining; alternative shortwall mining method - gretley colliery; longwall top coal caving ; ventilation. main fans ; main airways ; secondary or panel airways ; development face ventilation ; longwall ventilation ; ventilation planning ; ventilation equipment suppliers ; ventilation consultants ; gas control ...

  • coal mining methodsppt - hofvantwentseuitdaging.nl

    coal mining methods ppt - baasrodeva.be. 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 which are gradually cut away as the work proceeds ...

  • itsimplementation inSouthAfricancollieries

    bord-and-pillar method isthe problem ofwidespread mining activities, withlongerroadways tobemaintained and higher transport costs than for a concentrated longwall production ofcomparable output. Ventilation Compared with the supply ofair tothe face ofthe ordinary bord-and-pillar section, the ventilation ofa 10ngwaH face is a straightforward operation not re-requiring daily changes ...

  • Underground Mining Methods and Equipment

    major caving methods are: • Longwall mining • Sublevel caving • Block caving Longwall mining is used in horizontal, tabular deposits (mainly coal), while the others have applications in inclined or vertical, massive deposits, a lmost exclusively metallic or nonmetallic. Because the exploitation openings are intentionally destroyed in the progress of mining, the caving class is truly ...

  • Longwall Mining Equipment

    developments since 1990 have once again established plowing as the preferred longwall mining method for seams below 1.8 m (71 in). Cat plows offer world-leading features that other manufacturers cannot and a cost of ownership that far outstrips the shearer when mining thin and medium seams. Their reliability, high-productivity and ability to mine in-seam make them the ideal choice for longwall ...

  • Longwall Mining Equipment

    developments since 1990 have once again established plowing as the preferred longwall mining method for seams below 1.8 m (71 in). Cat plows offer world-leading features that other manufacturers cannot and a cost of ownership that far outstrips the shearer when mining thin and medium seams. Their reliability, high-productivity and ability to mine in-seam make them the ideal choice for longwall ...

  • Introduction to Longwall Mining Engineering Systems ...

    Longwall mining is one of the widely used coal extraction methods that involve the use of several sophisticated types of machinery to mine: a continuous seam of coal block which can be up to 450m wide and 7km long. To achieve a productive operation, multiple pieces of equipment must be fully integrated to work as a single entity. Such equipment includes; Longwall shearer Longwall armoured face ...

  • (PDF) Coal Mining Methods Underground Mining Longwall ...

    Coal Mining Methods Underground Mining Longwall Room and Pillar Mining

  • coal mining methodsppt - hofvantwentseuitdaging.nl

    coal mining methods ppt - baasrodeva.be. 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 which are gradually cut away as the work proceeds ...

  • A General Review on Longwall Mining-Induced Fractures in ...

    Longwall mining is the most common method of underground coal mining all over the world. During the retreating of the longwall face, the primary equilibrium state is disturbed and, as a result, the surrounding rocks are unavoidably broken or fractured. The induced fractures not only degrade the strength of the rock mass but also serve as main channels for fluids ...

  • Longwall Retreat and Creep Measurement Based on UWB

    Longwall mining is a primary method for extracting coal from underground mine, as it can protect worker safety and improve mining productivity. The typical plane view of a longwall mining panel is shown in Figure 1(a). Two long roadways are excavated to form the boundaries of the longwall panel [1, 2]. At the end of the roadway, a shearer, an armored face conveyor (AFC), and a roof support ...

  • Coal mining - Choosing a mining method Britannica

    Choosing a mining method. The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many technological, economic, and social factors.

  • DESIGN PARAMETERS OF ROOF SUPPORT SYSTEMS FOR PRE

    longwall equipment recovery methods. To investigate the feasibility of a pre-driven longwall recovery room, a pre-driven room was mined and supported between two existing recovery chutes as shown in Figure 1. The recovery room, driven 170 ft long and 16 ft wide, was supported with several types of internal roof reinforcements and high-capacity roof-to-floor cuttable concrete cribs ...

  • Longwall mining - Global Energy Monitor

    Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 1-2 m thick). The longwall "panel" (the block of coal that is being mined) is typically 3-4 km long and 250-400 m wide. Longwall mining produced 176 million tons of coal in 2007, about 15 percent of total U.S. production. Longwall mines are located in Appalachia as well as and ...

  • A Brief Comparison of Longwall Methods Used at Mining of ...

    to Hartman and Mutmansky (2002), longwall mining is an exploitation method used in flat-lying and tabular deposits, where a long face is established to extract the mineral. In coal longwall mining, large blocks of coal seam (about 300 m wide and 2 to 3 km long) are developed by driving headings, known as "gate roads" or "road ways" around them, and, then the so-called panel extracted in a ...