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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.
Sublevel stoping is a commonly used method in large scale mining. It is a versatile and productive method that is primarily used for large orebodies with a steep dip, regular shape and defined ore boundaries. There are different variations of the method depending on the shape of the orebody.
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 35 sublevels in the vertical ...
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.
TERIMA KASIH Sublevel Stoping Mining Method Karakteristik Oleh: Evan Anindita Michico Yolanda Susan Indri Liani *Kelebihan : Produktivitas Tinggi Peledakan dapat dilakukan dalam skala besar Dapat menggunakan alatalat besar Recovery Cukup Tinggi ( sekitar 75% 90% )
Oct 31, 2019· This course refers to the generic mining method of sublevel stoping. The most commonly used sublevel stoping mining methods are sublevel open stoping, longhole open stoping or blasthole stoping, and vertical crater retreat (VCR). Variations of this method include vein (Alimak) mining, transverse stoping, Avoca and longitudinal mining. Sublevel stoping accounts for more .
Mining is done by sublevel open stoping. Ore development level spacing for open stoping is between 15 and 30 metres depending on the ore thickness with drive width dimensions of 6 metres wide and metres high. Blast holes (76millimetre diameter) for stoping are drilled from lower levels in a fan pattern using Simba drill rigs.
Among underground mining methods, sublevel stoping are a commonly used method in largescale mining. It is a versatile and productive method that is primarily used for steeply deeping orebodies with regular shape, defined ore boundaries and competent ore and host rock.
A long hole stoping system for mining narrow platinum reefs Advantages of this mining method It allows for a low safety and health risk as well as improved working environment. Physical work is reduced and it is easier to motivate the workforce. Another advantage is the improvement in grade due to better control of dilution, as
Mar 09, 2018· LongHole Sublevel Stoping. Longhole sublevel stoping, often referred to as sublevel open stoping and blast hole stoping is a commonly used method in large scale mining. It is a versatile and productive method that is primarily used for large ore bodies with a steep dip, regular shape, and defined ore bodies.
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.
Dec 04, 2019· Sublevel Stoping (SLS) is often regarded as a mining method for steeply dipping deposits in competent rock. The method involves extracting the ore between the sublevels. The sublevele intervals varies from mine to mine. The operation includes .
A sublevel stoping mining method is predominantly employed and the ore is trucked to surface using a variety of articulated dump trucks. Oneway haul distances are of the order of and the cycle time for trucking is typically 45 min. Adaptations of this mining method as well as room and pillar mining are undertaken depending on the ...
Aug 19, 2019· MINING METHOD OF THE WEEK SUBLEVEL STOPING!! August 19, 2019. This method is really a combination of several different methods of stoping. The figure is an illustration of the method, and shows half of the vein cut away where the stoping is being done. The miners go from the haulage level up the raise into the sublevels.
1. Underground Mining Methods Classification of Underground Mining Methods Underground Operations in General Roomandpillar Mining Sublevel Stoping Cutandfill Stoping Longwall Mining Sublevel Caving Block Caving 2. Underground Mining Machinery Glossary Bibliography Biographical Sketches Summary
Jul 09, 2009· Method of underground mining operation: Sublevel Stoping By courtesy of Tamrock Sandvick Copyright
Feb 01, 2010· Caving (, Sublevel and Block) mining methods are v aried and versatile an d involve ca ving the ore and/ or the overlying rock. Sub sidence of the surface normally occu rs afterwar d.
Sublevel stoping mining methods are very popular in Canadian metal mines since they enable maximum ore recovery due to pillarless mining. Sublevel stoping mining methods are generally employed to extract steeply dipping tabular ore deposits characterized by relatively long strikes and having various thicknesses.
The mining method selected is determined by the size, shape, orientation and type of orebody to be mined. The orebody can be narrow vein such as a gold mine in the Witwatersrand, the orebody can be massive similar to the Olympic Dam mine, South Australia, or CadiaRidgeway Mine, New South width or size of the orebody is determined by the grade as well as the distribution of the ore.
Other articles where Sublevel caving is discussed: mining: Sublevel caving: This method owes the first part of its name to the fact that work is carried out on many intermediate levels (that is, sublevels) between the main levels. The second half of the name derives from the caving of the hanging wall and.
Sublevel Caving Technique Free download as PDF File (.pdf) or read online for free. An underground mining method used in large, steeply dipping orebodies where the wall rock is of an incompetent nature. Parallel drives are developed in the ore on equally spaced levels. The ore is then drilled and blasted using longholes between levels, often in a circular or fan pattern, on retreat.
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 .
Feb 01, 2014· Sublevel Stoping Underground Mining Methods. Presentation (PDF Available) · February 2014 ...
Caving (, Sublevel and Block) mining methods are v aried and versatile an d involve ca ving the ore and/ or the overlying rock. Sub sidence of the surface normally occu rs afterwar d.
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