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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.
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.
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 .
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.
Where ground conditions permit, it is possible to use a combination of cutandfill mining and sublevel stoping called rill mining. In this method drifts are driven in the ore separated by a slice of ore two or three normal slices high. As in sublevel stoping, vertical slices are removed by longhole drilling and blasting, but, as the slices are ...
Feb 10, 2018· Black Diamond Drilling Services Australia Database. Roofex rock bolt providing peace of mind Duration: 3:16. Black Diamond Drilling Services Australia PTY LTD 16,392 views
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.
Feb 01, 2014· Sublevel Stoping Underground Mining Methods. Presentation (PDF Available) · February 2014 ...
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
1. Overview Avoca Method of mining is a variation of sublevel stoping method with the introduction of waste rockfill as backfill. This method is popular in high grade epithermal vein deposits where the strength and conditions of the walls of the open stopes are weak to moderate and require backfilling of waste rock to stabilise the walls, minimise the ore dilution and maximise the ore recovery.
This book presents the latest mining principles and techniques in use today. Reflecting the international and diverse nature of the industry, a series of mining case studies is presented covering the commodity range from iron ore to diamonds extracted by operations located in all corners of the world.
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).
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 force .
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.
Underground Mining Methods presents the latest principles and techniques in use today. Reflecting the international and diverse nature of the industry, a series of mining case studies is presented covering the commodity range from iron ore to diamonds extracted by operations located in all corners of the world. Industry experts have contributed 77 chapters.
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.
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.
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.
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.
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.
Jul 09, 2009· Method of underground mining operation: Sublevel Stoping By courtesy of Tamrock Sandvick Copyright
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.
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 ...
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 ...
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