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Popular Searches Underground mining methods SlideShare sub level stopping mining method ppt,Underground Mining Methods: By, StopAndPillar Mining: It is the method in which openings are driven horizontally, Sub level caving is applicable to near Chapter 9 DECISION TREES isebguacilChapter 9 DECISION TREES, is explicitly, Get Price.
sub level stopping mining method ppt Sub level stopping mining method ppt. Current longwall mining method applied in the mine the current method used in the abovementioned mines is a sublevel longwall cavingretreat method in this method, the face is formed perpendicular to the seam strike and implemented in the form of sls 75.
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 .
INTRODUCTION The sublevel stoping mining method is usually applied to a relatively steeply dipping, competent ore body, surrounded by competent wall rock. Ore is produced by drilling and blasting longholes, which can range from 50 mm (2 in.) to 200 mm (7% in.) diam, with lengths up to 90 m (300 ft).
A mining method involving overhand, underhand, and shrinkage stoping. Its characteristic feature is the use of sublevels. The sublevels are worked simultaneously, the lowest on a given block being farthest advanced and the subs above following one another at short intervals. The uppermost sublevel underneath the cover is partly caved.
Table of ContentsStopingStopeDevelopment MethodsRaisst of Driving Raises Stoping The foregoing discussion relates to general mine development and covers the work required to reach and penetrate the ore bodies and to provide the main arteries through which the ore is taken from the mine. These arteries provide mine drainage and avenues for travel and transportation of .
a limited opening which creates challenges for the mining method. In SLC operations the decision to stop loading from a draw point and proceed to the next one is a critical decision. If a draw point is closed early, ore is lost in the draw point and cannot be conclusively recovered at the lower levels. If it is closed
Dec 30, 2019· Breast stopping is a low cost, simple method much preferred ... cut fill stoping, shrinkage stoping, sub level caving, caving method of stoping, top slicing, stoping method, stoping method .
SUBLEVEL OPEN STOPING: DESIGN OF THE O640, L651 AND N659 SUBLEVEL OPEN STOPES IN THE 3000 OREBODY OF THE MOUNT ISA COPPER MINES, QUEENSLAND, AUSTRALIA L. SLOANE Presented in partial fulfilment of the requirements for the degree: (MINING ENGINEERING) IN THE FACULTY OF ENGINEERING DEPARTMENT OF MINING .
This paper describes several sources of external dilution affecting the stope walls during underground sublevel and bench stoping. Factors which control ground behaviour such as the geometry of the openings, the influence of geological discontinuities, stress redistribution and blasting practices are discussed. Crown stope instability due to stress concentrations induced by changes in the ...
Oct 22, 2014· Sublevel stoping..Underground mining methods 1. Hassan Z. Harraz hharraz2006 2014 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.
sub level stopping mining method ppt. Home sub level stopping mining method ppt. Caving Underground Mining Methods (longwall, Sublevel . Oct 23, 2014 Caving Underground Mining Methods (longwall, Sublevel caving, Block caving) 1. This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power ...
SubLevel Caving Subsidence reaches surface at the Ridgeway underground mine. Using this method, mining is planned to extract rock from the stopes without filling the voids; this allows the wall rocks to cave in to the extracted stope after all the ore has been removed. The stope is then sealed to .
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 .
Sublevel caving also allows for a slightly more selective extraction of the orebody than is attainable through block or panel caving. Production rates achieved in sublevel caving operations are typically lower than for block caves but higher than for stoping methods." CAVING requIremeNts Caving is a nonselective, bulk mining method.
These increased level distances are intended to reduce overall development costs when mining sublevel cave stope areas. Understanding the principles of gravity flow is centrai to optimizing design and operating practices in sublevel cave mining. Despite its significance, Brady and Brown (1993) conclude
SubLevel Caving Subsidence reaches surface at the Ridgeway underground mine. Using this method, mining is planned to extract rock from the stopes without filling the voids; this allows the wall rocks to cave in to the extracted stope after all the ore has been removed. The stope is then sealed to .
Oct 23, 2011· Mining methods 1. Mining methods for s teeply dipping and massive deposits 2. Mining methods for s teeply dipping and massive deposits Self supported methods Sublevel caving Block caving Induced Block Caving Sublevel stoping Undercut and fill stoping Squareset stoping Cutandfill stoping Shrinkage stoping With caving of overburden Without caving of overburden Supported methods .
Apr 01, 2014· The first comprehensive work on one of the most important underground mining methods worldwide, Geotechnical Design for Sublevel Open Stoping presents topics according to the conventional sublevel stoping process used by most mining houses, in which a sublevel stoping geometry is chosen for a particular mining method, equipment availability, and work .
Shrinkage mining was a common stoping method prior to mechanised mining and the introduction of hydraulic fill. Sublevel stoping, cut and fill mining and sublevel caving have generally replaced shrinkage mining in Australia, Europe and Canada. The method is still used in a handful of nonmechanised mines in South America, Africa, Asia and Canada.
Mar 22, 2007· Sublevel Caving Mining Method Duration: 3:06. Black Diamond Drilling Services Australia PTY LTD 12,792 views
2) Room (Bor d)andPillar mining (or con tinuous mining) method It is the most common supported pillar method, designed and used primarily for mining flatlying
Feb 01, 2014· 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 fulltext.
Sublevel stoping generally is a largescale open stoping method. It sometimes is referred to as longhole or blasthole stoping. This method usually is applied to strong ore bodies that require minimal support and are surrounded by strong country rock. The ore body should be fairly regular in shape and welldefined.
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