bord and pillar mining equipment in nepal

May 31 2017 · Bordandpillar mining is used in first workings of a deposit andnbspwhen irregularly shaped deposits or sensitive environmental conditions call for a ...We are a professional mining machinery manufacturer, the main equipment including: jaw crusher, cone crusher and other sandstone equipment;Ball mill, flotation machine, concentrator and other beneficiation equipment; Powder Grinding Plant, rotary dryer, briquette machine, mining, metallurgy and other related equipment. which can crush all kinds of metal and non-metallic ore, also can be dry grinding and wet grinding.If you are interested in our products or want to visit the nearby production site, you can click the button below to consult us.Welcome to our factory to test machine for free!

  • Mobile Crushing Plant for Granite in Mali

    Mobile Crushing Plant for Granite in Mali

    This customer is from a construction company in Bamako, Mali. According to our customer's high demand of production capacity and granularity of finished production, our engineer assembled 2 mobile crushing stations of FTM1142E710 model and FTM3S186PYF13 m

  • Gypsum Powder Plant

    Gypsum Powder Plant

    Gypsum powder plant is a kind of micronized line which turns natural dihydrate gypsum ore (raw gypsum) or industrial by-product gypsum (desulphurization gypsum, phosphogypsum, etc.) into construction gypsum (calcined gypsum) through crushing, grinding, he

  • Gold Mine Processing Line In South Africa

    Gold Mine Processing Line In South Africa

    Related Equipments: PE-750×1060 Jaw crusher , PYFB-0918 Hydraulic cone crusher and 3YK1548 vibrating screen .

  • River Gravel Crushing Plant

    River Gravel Crushing Plant

    As a pure natural stone with high usage value, river gravel is formed in the long-term impact, squeeze and friction function. River gravel generally shows the color of black, white, yellow, red, green gray, etc. 

  • Volcanic Rock Powder Grinding Plant

    Volcanic Rock Powder Grinding Plant

    Application Area:Building materials, chemicals, fertilizer, metallurgy, mining, refractory, ceramic, steel, thermal power, coal, etc.

  • Dry Mixed Mortar Plant

    Dry Mixed Mortar Plant

    Dry mixed mortar plant is designed for enterprises which have small production scale of special dry mortar. It is a kind of modular production line which can meet the needs of producing multiple species dry mixed mortar and ordinary mortar in small bat

  • Bordandpillar mining explained  Illawarra Mercury

    Bordandpillar mining explained Illawarra Mercury

    May 31 2017 · Bordandpillar mining is used in first workings of a deposit andnbspwhen irregularly shaped deposits or sensitive environmental conditions call for a

  • Room and Pillar Mining  an overview  ScienceDirect Topics

    Room and Pillar Mining an overview ScienceDirect Topics

    Continuous miners used primarily in ‘room and pillar’ mining and also to prepare roadways in a ‘longwall’ systems have incrementally improved over the last 20 years Fig 711But they are not advancing in automation as quickly as longwall equipment with the exception that they are more often remotely controlled by an operator rather than by an operator sitting on the machine

  • Bord and pillar mining – Coal and coal mining – Te Ara

    Bord and pillar mining – Coal and coal mining – Te Ara

    Bord and pillar mining Next This diagram shows the traditional method of bord and pillar mining Miners first extracted coal along roadways or bords while the coal in between the bords acted as pillars holding up the roof Then the outer pillars were mined leaving the roof to collapse in a controlled way as miners retreated to the exit

  • EVALUATION OF BORD AND PILLAR MINING SYSTEM IN

    EVALUATION OF BORD AND PILLAR MINING SYSTEM IN

    The success of Bord and Pillar mining is selecting the optimum pillar size If the pillars are too large then the extraction ratio decrease leading to less production and profitability and if the pillars are too small it becomes venerable to human safety The issues relating to the stability of pillars

  • Hardrock room and pillar  QueensMineDesignWiki

    Hardrock room and pillar QueensMineDesignWiki

    Room and pillar is an underground mining method that has applications to a wide variety of hardrock deposits worldwide It is commonly classified as an openstoping method meaning that development involves mining out underground cavities while leaving the

  • Nonexplosive rock breaking Mining all of the reef all

    Nonexplosive rock breaking Mining all of the reef all

    Jan 21 2020 · This would see the extraction of pillars within a bord and pillar or room and pillar mining method as a means to extract the reef left behind as a result of this mining method The current investigation will take into account the pillar stress as well as the best extraction pattern the best way to support the pillar during and after extraction

  • Bordandpillar mining in inclined orebodies

    Bordandpillar mining in inclined orebodies

    mechanized bordandpillar mining layout for a given piece of ground Vlakpoort and Moddergat using a given selection of machines This piece of ground contains the PGM bearing UG2 Reef with an average thickness of 124 cm and dipping at 18° with adverse strike and dip changes Two bordandpillar layouts were designed for this area

  • VENTILATION PLANNING LAYOUTS FOR LARGE

    VENTILATION PLANNING LAYOUTS FOR LARGE

    Large roomandpillar stone mining fundamentals The value per ton of ore for large roomandpillar stone mines is typically low therefore productivity must be high Typical face areas are 122 m wide x 76 m high 40 ft wide by 25 ft high with 43 m 14 ft pulled with each blast Figure 1 This equates to over 1000 tons of stone per

  • PDF Underground Mining Methods Room and Pillar method

    PDF Underground Mining Methods Room and Pillar method

    To minimise mining loses and also provide high safety conditions proper dimensioning of pillars using geomechanics must be considered 5 Figure 2 below illustrates typical pillar failure

  • Hardrock room and pillar mining best practice industry

    Hardrock room and pillar mining best practice industry

    different mining companies and mining operations from Southern Africa shared the details of how they organize their individual mining operations and what productivity they obtained from the mechanized equipment There were also presentations on the history and on the future potential of hardrock mechanized room and pillar mining in Southern