conventional discontinuous mining methods

  • conventional discontinuous mining methods

    Conventional Discontinuous Mining Methods. The U.S. Bureau of Mines recently conducted an investigation into the amount of respirable and quartz dust generated while mining rock in coal mines by continuous and conventional methods. The study was made at two mines that use both continuous and conventional mining.conventional discontinuous mining methods,Conventional mining usually occurs around 1,000 metres below the surface. Solution mining can access potash reserves at depths exceeding 1,600 metres below the earths' surface. The majority of Saskatchewan potash is mined by the conventional mining method, where large mining machines are used to extract the ore by cutting tunnels into the ore

  • An equivalent discontinuous modeling method of jointed

    An equivalent discontinuous modeling method of jointed rock masses for DEM simulation of mining-induced rock movements. After the completion of open-pit mining, the ore body mining under the western slope was extended to the underground mining. For this, a sublevel caving method was used, with horizontal slice mining from top to bottom. TheTypes of Underground Mining Method Comparison,In any discussion of Methods of Underground Mining Comparison, one is repeatedly confronted with the difficulty of dealing with so many variable conditions. It is not an exact science and in the choice of a method each varying factor has a certain weight, which, in many cases, experience alone can determine.

  • Conventional mining Article about conventional mining by

    Alternative mining pilot tests in narrow veins: The Company is currently carrying out pilot testing of mining methods for narrow veins, using the sublevel stoping and conventional mining cut and fill methods, in order to determine the optimal mining method for these types of structures.SURFACE MINING METHODS lgc2016.files.wordpress,Of all the variations of surface mining methods available, the three most common methods only will be described here, namely; (discontinuous) or continuous systems. Refer to Bullivant’s to conventional strip mining and Figure 2.2 and 2.3 show the terminology used and typical method of strip mining.

  • (PDF) Underground mining Methods ResearchGate

    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-lyingDigging deeper: Mining methods explained Anglo American,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

  • Surface Mining Methods and Equipment

    appropriate mining method is selected based on technical, economic, and environmentally accountable considerations. The first step in selecting the most appropriate mining method is to compare the economic efficiency of extraction of the deposit by surface and underground mining methods . This section reviews surface mining methods andContinuous miners Introduction underground COAL,Continuous miners. Though there are many variations in design, continuous miners mostly consist of five main elements: A central body to carry all other components mounted on some type of drive mechanism to provide mobility (most commonly Fruitful tracks).

  • An equivalent discontinuous modeling method of jointed

    An equivalent discontinuous modeling method of jointed rock masses for DEM simulation of mining-induced rock movements. After the completion of open-pit mining, the ore body mining under the western slope was extended to the underground mining. For this, a sublevel caving method was used, with horizontal slice mining from top to bottom. TheConventional mining Article about conventional mining by,Alternative mining pilot tests in narrow veins: The Company is currently carrying out pilot testing of mining methods for narrow veins, using the sublevel stoping and conventional mining cut and fill methods, in order to determine the optimal mining method for these types of structures.

  • (PDF) Underground Mining Methods: Room and Pillar method

    A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.Description of mining methods (step by step),Primary Mining Method Modified Avoca. Information. GENERAL INFORMATION The Miitel mine is actually in a development stage. The higher part of the orebody has been mined by the conventional cut-and-fill method. The lower part, the longhole modified Avoca method has been selected. A 17-m (55.7 ft) spacing between sub-levels is planned.

  • Underground Mining Methods and Equipment

    UNESCO EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING Vol. II Underground Mining Methods and Equipment S. Okubo and J. Yamatomi ©Encyclopedia of Life Support Systems (EOLSS) 2. Strength of the hanging wall, footwall, and ore body. 3. Economic value of the ore and grade distribution within the deposit.Coal Mining Methods Colorado School of Mines,Longwall mining and room-and-pillar mining are the two basic methods of mining coal underground, with room-and-pillar being the traditional method in the United States. Both methods are well suited to extracting the relatively flat coalbeds (or coal seams) typical of the United States. Although widely used in other countries, longwall mining

  • Different Raising Techniques in mining

    Mar 14, 2018· Different Raising Techniques in mining 1. DIFFERENT RAISING TECHNIQUES 2. Definition vertical or steeply-inclined opening that connects different levels in mine. ladder way access to stopes, ore pass or airway in mine’s ventilation system. Raising methods vary from simple manual drill and blast to mechanical rock excavation with raise boring machines (RBMs).Methods of Gold Mining Geology In,Gold mining is the process of mining of gold or gold ores from the ground. There are several techniques and processes by which gold may be extracted from the earth. Placer mining Placer mining is the technique by which gold that has accumulated in a placer deposit is extracted.

  • Continuous miners Introduction underground COAL

    Continuous miners. Though there are many variations in design, continuous miners mostly consist of five main elements: A central body to carry all other components mounted on some type of drive mechanism to provide mobility (most commonly Fruitful tracks).Open-Pit Mining Methods,Open-pit mining methods are applicable to mining ore deposits that apex at or near the surface. If the deposit apexes below the surface, the overburden and barren capping overlying the ore must be removed in advance of open-pit mining. The removal of this material is known as stripping. The stripping-pit limits must be extended beyond the limits of the ore pit to provide a bench, and the pit

  • Underground mining methods slideshare.net

    Apr 14, 2014· Underground mining methods: These are the methods/techniques employed when the depth of the deposit,the stripping ratio of the overburden to ore,or both becomes excessive to surface exploitation. Choice of an underground mining method is often closely related to the Geology of the deposit and degree of ground support necessary to make theROCK MECHANICS & ROCK ENGINEERING,Discontinuous model similar to that of type (b) can be used for type (c) rock mass. However, it is almost impossible to explore all the joint systems and it seems that this type of rock mass behaves just like a continuous body in a global sense. The conventional FD method with regular grid systems does suffer from shortcomings, most of all

  • Potash Mining Methods Gensource

    Comparing 11 potash mines in Saskatchewan, solution mining’s average energy consumption was about 1300kWh/tonne and conventional mining’s was close to 400kWh/tonne. Natural gas represents the largest source of energy type for the Canadian potash industry, representing almost 80 percent of total energy consumed annually.Underground mining of thick coal seams ScienceDirect,Nov 01, 2015· Thickness of a coal seam is an important geological parameter during selection of a suitable underground mining method for its efficient extraction. A coal seam of around 3–4 m thickness is, generally, observed to provide normal working height for efficient extraction and is suitable for most of the conventional mining methods.

  • Respirable dust generation : comparison of continuous and

    Get this from a library! Respirable dust generation : comparison of continuous and conventional mining methods when excavating rock in coal mines. [John A Organiscak]DISCONTINUOUS DEFORMATION ANALYSIS BASED ON ,In the conventional discontinuous deformation analysis (DDA) method, the contact conditions are enforced by the penalty function method. Improperly selected

  • Different Raising Techniques in mining

    Mar 14, 2018· Different Raising Techniques in mining 1. DIFFERENT RAISING TECHNIQUES 2. Definition vertical or steeply-inclined opening that connects different levels in mine. ladder way access to stopes, ore pass or airway in mine’s ventilation system. Raising methods vary from simple manual drill and blast to mechanical rock excavation with raise boring machines (RBMs).Coal Mining Methods Colorado School of Mines,Longwall mining and room-and-pillar mining are the two basic methods of mining coal underground, with room-and-pillar being the traditional method in the United States. Both methods are well suited to extracting the relatively flat coalbeds (or coal seams) typical of the United States. Although widely used in other countries, longwall mining

  • Underground mining (hard rock) Wikipedia

    Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubies. Soft rock mining refers to excavation of softer minerals such as salt, coalMethods of Gold Mining Geology In,Gold mining is the process of mining of gold or gold ores from the ground. There are several techniques and processes by which gold may be extracted from the earth. Placer mining Placer mining is the technique by which gold that has accumulated in a placer deposit is extracted.

  • Underground mining methods slideshare.net

    Apr 14, 2014· Underground mining methods: These are the methods/techniques employed when the depth of the deposit,the stripping ratio of the overburden to ore,or both becomes excessive to surface exploitation. Choice of an underground mining method is often closely related to the Geology of the deposit and degree of ground support necessary to make theSubsidence from Underground Mining: Environmental ,mining methods, depth of extraction, thickness of deposit, and topography, as well as the in situ properties of the rock mass above the deposit. The impacts of subsidence are potentially severe in terms of damage to surface utility lines and struc­ tures, changes in surface-water and ground-water conditions,

  • Split shell open pit design concept applied at De Beers

    Concentric mining Open pit design and planning at Venetia mine has, in the past, been based on a conventional concentric mining method. The concentric mining principle mines a waste cut or pushback 360° around the orebody. Each mining cut becomes progressively larger as the pit gets deeper. In order to maintain ore feed to the plant,ROCK MECHANICS & ROCK ENGINEERING,Discontinuous model similar to that of type (b) can be used for type (c) rock mass. However, it is almost impossible to explore all the joint systems and it seems that this type of rock mass behaves just like a continuous body in a global sense. The conventional FD method with regular grid systems does suffer from shortcomings, most of all

  • OPTIMIZATION OF MECHANIZED MINING LAYOUT WITHIN

    • Optimization of mining methods • Proposed layout recommendation. Current mining methods The current mining methods that were evaluated for the purposes of the study were conventional scattered breast mining, bord and pillar (LP) and mechanized breast (XLP) mining.Coal mining Underground mining Britannica,Coal mining Coal mining Underground mining: In underground coal mining, the working environment is completely enclosed by the geologic medium, which consists of the coal seam and the overlying and underlying strata. Access to the coal seam is gained by suitable openings from the surface, and a network of roadways driven in the seam then facilitates the installation of service facilities

  • Data Mining vs Web Mining Know 7 Most Beneficial Comparisons

    Web mining and data mining are more or less similar techniques but web mining is all about analysis on the web. Data mining is not limited to the web. It’s a traditional process that takes place for any data analytics. Talking about the data from the web, there are varieties of data that can be observed. It could be structured data (databaseUniversidade Federal do Rio Grande do Sul,1.3 MINING METHODS 1.3.1 Introduction Once an ore body has been probed and outlined and sufficient information has been collected to warrant further analysis, the important process of selecting the most appropriate method or methods of mining can begin. At this stage, the selection is preliminary, serving only as the basis for a project layout and