Oct 22, 2014· Sublevel stoping..Underground mining methods 1. Hassan Z. Harraz [email protected] 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 stoping, cut and fill mining and sub-level caving have generally replaced shrinkage mining in Australia, Europe and Canada. The method is still used in a handful of non-mechanised mines in South America, Africa, Asia and Canada. 10.1.1.1 Disadvantages The method is our intensive and requires experience in such methods.
Jul 25, 2016· Underground Mining Methods Sublevel Stoping 40 25. Blasting Voladura Diseño de carguío SEQUENCE Figura 39. Diseño de carguío Underground Mining Methods Sublevel Stoping 41 DESIGN OF BLAST LONG DRILLS TJ 1282 N DATA AND FACTORS OF THE BLAST EXPLOSIVESAND ACCESSORIES WIDE 12.00 m ANFO 168 kg m BOOSTER 1/3 LB 25 und m KG.
May 25, 2015· 35Underground Mining Methods Sublevel Stoping Diseño de Perforación FIGURA 31. Perforación radial en Mina Cerro Lindo Fuente: Medina, E. (2013) Índ de perforación: 8.56 ton/m 36. 36Underground Mining Methods Sublevel Stoping
SUB-LEVEL OPEN STOPING: DESIGN OF THE O640, L651 AND N659 SUB-LEVEL 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: M.ENG (MINING ENGINEERING) IN THE FACULTY OF ENGINEERING DEPARTMENT OF MINING UNIVERSITY
started is hard to stop and much of the L651 and N 659 sub level open. stopes in the 3000 orebod Classification of surface mining methods together with the desired parameters/ conditions
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).
Mining rates will gradually build up over the first half of 2019 and are expected to reach nameplate capacity of 200,000t per month by the end of June 2019. Sub-level caving is an advanced and highly efficient low-cost bulk underground mining method that provides early access to ore. Mining commences at the top of the deposit and develops
Table of ContentsFactors Affecting Cho of MethodReview of Stoping MethodsUnderhand Stoping Mining MethodOverhand Stoping MethodLongitudinal Back, Flat-Back Mining MethodLong-Wall StopingmMining MethodRill-Cut Stoping MiningSaw-Tooth Back StopingShrinkage StopingMining by Combination StopingSide StopingBreast StopingSublevel StopingSquare-Set StopingFilling MethodsCaving Methods
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. Cho of an underground mining method is often closely related to the Geology of the deposit and degree of ground support necessary to make the
This describes several sources of external dilution affecting the stope walls during underground sub-level and bench stoping. Factors which control ground behaviour such as the geometry of the openings, the influence of geological discontinuities, stress re-distribution and blasting practs are discussed. Crown stope instability due to stress concentrations induced by changes in the
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).
Mining rates will gradually build up over the first half of 2019 and are expected to reach nameplate capacity of 200,000t per month by the end of June 2019. Sub-level caving is an advanced and highly efficient low-cost bulk underground mining method that provides early access to ore. Mining commences at the top of the deposit and develops
Dec 06, 2015· Atlas Copco Sublevel Caving Mining Method Duration: 3:06. Black Diamond Servs Australia PTY LTD 7,952 views
The first section gives an overview of underg round mining methods and practs as used commonly in underground mines, including classification of underground mining methods and brief explanations of the techniques of room-and-pillar mining, sublevel stoping, cut-and-fill, longwall mining, sublevel caving, and block caving. The second
Jan 21, 2018· It is the best video for understanding how to do Sublevel stoping mining method. It is in slide presentation form.
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-lying
Shrinkage mining was a common stoping method prior to mechanised mining and the introduction of hydraulic fill. Sub-level stoping, cut and fill mining and sub-level caving have generally replaced shrinkage mining in Australia, Europe and Canada. The method is still used in a handful of non-mechanised mines in South America, Africa, Asia and Canada.
Celebrating MEC Mining’s recent expansion into underground hard rock mining servs, our next webinar will focus on the effective application of sub-level open stope mining. MEC Mining’s Principal Mining Engineer Alessandro Dotta will discuss: the geological and geotechnical selection criteria for sub-level open stope mining and variations
Primary Mining Method Long-hole. Information. The gently dipping veins (average of 40 degrees) represent the singularity of this mine. In addition to the gently dipping, the vein is cut by several faults, and consequently is discontinuous. The retreating long-hole sub-level method is being tested in order to mechanize the mining operation.
Stoping, in mining engineering, the opening of large underground rooms, or stopes, by the excavation of ore.Stoping is practd in underground mineral mining when the surrounding rock is strong enough to permit the drilling, blasting, and removal of ore without caving.In mines where the rock requires no artificial support, the operation is known as open stoping.
The invention relates to the technical field of stoping methods and particularly relates to an underhand sublevel open stoping method. The underhand sublevel open stoping method comprises the following steps: firstly, arranging an ore block along the direction of an ore body and dividing the ore block into an ore room and an ore column; dividing the ore block into 3-5 sublevels in the vertical
