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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).
#0183;#32;Costs tend to vary depending on drilling and blasting designs with more costly methods leading to higher ore recovery. Sublevel stoping (and its variations) is one of the most popular mining method and accounts for approximately 75% of the methods used in mines across Canada. There are several variations of longhole sublevel stoping.
3) mining costs and capitalization requirements; 4) mining rate; 5) type and availability of labor; 6) environmental concerns; and 7) other sitespecific considerations. This paper encompasses a detailed look at the first two parameters since they, plus mining costs, have the greatest impact on the selec#173; tion of a mining method.
Shrinkage stoping Ascending method of mining Advantages and Disadvantages Vertical Crater Retreat stoping Introduction Application Developmental sequence of stopes Production How Cratering Works
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.
Economic Comparison of Drilling Systems in Sublevel
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
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
CNA Sublevel fillmining method Google . The sublevel fillmining method is a mining method which has the advantages of safety, high efficiency, high mining capacity, low loss and dilution, and low production cost. The invention discloses a sublevel fillmining method. Inquire Now; Bulyanhulu Gold Mine Mining Technology
Stoping cost is one of the largest of the items comprising the total cost of producing ore. The cost per ton of ore mined is important but may be overemphasized if the more important cost, that per unit of metal recovered, is thereby overlooked. A given stoping method may give a low cost per ton of ore but, by reason of high dilution involving the handling, hauling, hoisting, and treating of a
Stoping is very development intensive, although the cost of development is finally compensated by the fact that much of it is done in ore. Efficient use of largescale blasting makes stoping method one of the lowestcost underground mining methods available (Hartman, 1992). Several variations of open stoping have evolved due to modern technology.
sublevel stoping method, which is one of the most useful hardrock underground mining methods, it is possible to execute several production drilling systems depend on ore body''s geometry and production planning with a wide range of different production costs. Therefore applying sublevel stoping method economically should
For mining methods unsuitable for narrow stopes, where the slope width W is typically greater than 20 ft (6 m), % 200 quot; TOIlS PER DAY MINEO ''000 000 M Fig. Underground mine crew for various stoping methods and ore widths. Nmn for sublevel stoping mines with blastholes of small diameter (1 to 2 in. or 25 to 50 mm)
#0183;#32;The implementation of sublevel stoping mining method is an attractive and affordable alternative that can meet the objectives of increasing productivity at low cost with good safety and environment. For this implementation the selection of mining method was carried out, and then adapt it to the special case of the recovery of old fillings, it was the first gal of the company.
#0183;#32;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.
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