stope and pillar mining methods

Table of ContentsStoping MethodsClassification of stoping methodsStopes Naturally Supported Open StopesStopes Artificially SupportedShrinkage StopingCut Fill StopingStulled Stopes in Narrow VeinsSquareSet StopingCaved Stopes Mining MethodMining by Block Caving MiningMining by Sublevel CavingTop Slicing Mining MethodCombinations of Supported and Caved Stopes The subject of stoping

Mar 09 2018 · Some variations of the roomandpillar mining method include post roomandpillar mining and step roomandpillar mining Post roomandpillar mining is a combination of roomandpillar mining and cutandfill stoping mining whereas step roomandpillar mining is a variation of roomandpillar mining in which the footwall of an inclined ore body is adapted for use of trackless

what is stopeand pillarmining method Underground Mining Methods Handbook Mining Books Production Methods of Noncoal RoomandPillar Mining OpenStope Mining at the Magmont Mine Bixby MO Production Methods of RoomandPillar Coal Mining Study of Interrelationships and Constraints in Underground Coal Mining by RoomandPillar Methods

The first section gives an overview of underg round mining methods and practices as used commonly in underground mines including classification of underground mining methods and brief explanations of the techniques of roomandpillar mining sublevel stoping cutandfill longwall mining sublevel caving and block caving The second

Stoping is the removal of the wanted ore from an underground mine leaving behind an open space known as a stope Stoping is used when the country rock is sufficiently strong not to cave into the stope although in most cases artificial support is also provided As mining progresses the stope is often backfilled with tailings or when needed for strength a mixture of this material and cement

Nov 02 2011 · Choice of mining method Underground Mining Methods Soft rock Mining Methods Blast mining Shortwall mining Coal Skimming or Sink and Float method Hard rock Mining Methods Stoping 1 Room and pillar 2 Bench and Fill B F stoping 3 Cut and Fill C F stoping 4 Stull stoping 5 Squareset stoping 6 Shrinkage stoping 7 Longhole Open

Oct 23 2011 · SELF SUPPORTED METHODS 15 Sublevel stoping 16 Sublevel stoping 17 Sublevel stoping 18 Sublevel stoping in thick orebody Aa Bb Cc A A C C B B 19 Large open stope mining 20 Large open stope mining 21 Large open stope mining 22 Large open stope mining with primary and secondary stopes 23

Underground Mining Methods Sublevel stoping Sublevel stoping is a mining method in which ore is blasted from different levels of elevation but is removed from one level at the bottom of the mine Before mining begins an ore pass is usually drilled Room the open areas left open by blasting in room and pillar mining

All the advantages of bordandpillar mining make this method sound like the ultimate cost effective and efficient mining method but there are major restrictions to its application eg The thickness of the orebody in relation to the machine The stoping will consist of three phases

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

2172016 Stopeandpillar mining a stope is a production opening in a metal mine is a similar method used in noncoal mines where thicker more irregular ore bodies occur the pillars are spaced randomly and located in lowgrade ore so that the highgrade ore can be extracted

Stope And Pillar Mining 2016317pillar thickness will increase crown pillar stability yet reduce mining recovery because part of crown pillar is formed by ore bodyPreventing stope failure is the key to maintain stability and optimie recovery of crown pillar

Stope And Pillar Mining Methods Compared to other mining methods roomandpillar mining is a lowcost method with a low recovery rate since some ore is left behind in pillars Yet the method causes very little dilution as the contact between ore and waste is limited due to the waste being on top and ore being at the bottom

In coal mining Mining methods classified into four distinct categories roomandpillar longwall shortwall and thickseam Read More openstoping methods In stoping A common openstoping method is roomandpillar mining in which pillars of ore are left standing to support the rock over a flatlying ore body Read More

Table of ContentsFactors Affecting Choice of MethodReview of Stoping MethodsUnderhand Stoping Mining MethodOverhand Stoping MethodLongitudinal Back FlatBack Mining MethodLongWall StopingmMining MethodRillCut Stoping MiningSawTooth Back StopingShrinkage StopingMining by Combination StopingSide StopingBreast StopingSublevel StopingSquareSet StopingFilling MethodsCaving Methods

Mar 09 2018 · Some variations of the roomandpillar mining method include post roomandpillar mining and step roomandpillar mining Post roomandpillar mining is a combination of roomandpillar mining and cutandfill stoping mining whereas step roomandpillar mining is a variation of roomandpillar mining in which the footwall of an inclined ore body is adapted for use of trackless

Nov 02 2011 · Choice of mining method Underground Mining Methods Soft rock Mining Methods Blast mining Shortwall mining Coal Skimming or Sink and Float method Hard rock Mining Methods Stoping 1 Room and pillar 2 Bench and Fill B F stoping 3 Cut and Fill C F stoping 4 Stull stoping 5 Squareset stoping 6 Shrinkage stoping 7 Longhole Open

The first section gives an overview of underg round mining methods and practices as used commonly in underground mines including classification of underground mining methods and brief explanations of the techniques of roomandpillar mining sublevel stoping cutandfill longwall mining sublevel caving and block caving The second

Room and pillar This method consists in a variety of empty stopes where only part of the ore is extracted the rest being left in the form of pillars to support the back These pillars may be abandoned definitely or be recuperated later

The stope and retreat mining method is used to extract the resourcesrocks from the stopes leaving a void behind this way the rock walls cave in to the extracted stope after the ore removal The two major coal underground mining methods are pillar mining and longwall mining

Room and Pillar Longwall Cut and fill stoping is a method of underground mining used in vertical stopes and in mining highgrade irregular ore bodies The rock mass surrounding the ore deposit is also usually weak unable to support loads over an extended stoping height As the name of the method implies successive cutting of the ore into

Table of ContentsStoping MethodsClassification of stoping methodsStopes Naturally Supported Open StopesStopes Artificially SupportedShrinkage StopingCut Fill StopingStulled Stopes in Narrow VeinsSquareSet StopingCaved Stopes Mining MethodMining by Block Caving MiningMining by Sublevel CavingTop Slicing Mining MethodCombinations of Supported and Caved Stopes The subject of stoping

All the advantages of bordandpillar mining make this method sound like the ultimate cost effective and efficient mining method but there are major restrictions to its application eg The thickness of the orebody in relation to the machine The stoping will consist of three phases

Room and Pillar Mining In this method mining is carried out in an ore deposit leaving behind some of the ore in the form of columns to support the roof and prevent it from collapsing Thus it results in the formation of spaces called ‘rooms’ where the ore is excavated with ‘pillars’ of ore distributed throughout

The major partial mining method are strip pillar mining Wongawilli strip pillar mining room and pillar mining and thicknesslimited extraction 1 Strip pillar mining Strip mining technology is an effective measure to reduce the overburden strata and surface movement and deformation and it is also one of the important measures in the system of “Green Mining”

OpenStope Mining at the Magmont Mine Bixby MO Production Methods of RoomandPillar Coal Mining Study of Interrelationships and Constraints in Underground Coal Mining by RoomandPillar Methods Extraction Practice in Thick Coals Seams Sublevel Stoping Introduction to Sublevel Stoping

The mechanised form of this mining method has potential for application in the metalliferous mining industry in Australia In this study a comparison is made between mechanised updip MUDS and transverse retreat stoping TRS methods A hypothetical nickel sulphide orebody located in Western Australia is used as case study