underground mining methods and equipment1.3. roomandpillar mining 1.4. sublevel stoping 1.5. cutandfill stoping 1.6. longwall mining 1.7. sublevel caving 1.8. block caving 2. underground mining machinery glossary bibliography biographical sketches summary the first section gives an overview of underg round mining methods and practices as usedunderground mining methodssublevel stoping sublevel stoping is a mining method in which ore is blasted from different levels of elevation but is removed from one level at the bottom of the mine. before mining begins, an ore pass is usually drilled from ramp inclined tunnels used to transport ore or machinery. room the open areas left open by blasting in room andgeotechnical design for sublevel open stoping immining mar , · this volume from crc press is published next month. it is the first comprehensive work on one of the most important underground mining methods worldwide, presenting 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 experience.typical mining equipments for an open stoping mining methodintroduction 1.1 mining method selection full entry for personnel and equipment, sublevel open stoping methods are used to extract large massive or tabular, inquire now; metal mining facilities ore mining and dressing mining common stoping methods the most commonly used placer mining extraction method is the openstoping mining methods metallurgist mineral processingapr 03, · this classification has been used ever since as a basis for describing methods in its publications dealing with mining methods and costs and is as follows classification of stoping methods. a. stopes naturally supported. 1. open stoping. (a) open stopes in small ore bodies. (b) sublevel stoping. 2. open stopes with pillar supports. (a) casualevaluation of the use of sublevel open stoping in themar 01, · the dlsos stoping method is an adapted sublevel open stoping method with backfill. in this method, the stoping sequence is from bottomup, and therefore, the blasted ore is mucked under the protection of the upper stope pillar. the muck is not affected by the weight of overlying strata, and the stress is not transferred.
sublevel stoping..underground mining methodsoct 22, · sublevel stoping..underground mining methods 1. hassan z. harraz [email protected] 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.types of underground mining method comparisonmar , · sublevel stoping. this method, described by f. w. sperr in the engineering and minting journal of june 5, , and by p. b. mcdonald in the mining and scientific press of july 5, , is really a combination of several different methods of stoping.sublevel open stoping queensminedesignwikidescription
this method is usually considered as an alternate to sublevel caving when a lower dilution method is needed and where the rock is fairly competent. the production for a mine using sublevel stoping can range from 40 tons/employeeshift, while onorebody requirements
ore bodies that are ideal for sublevel stoping are very tall and have a medium to narrow width, but can have an extensive length. the ideal width of the orebody should be greater than 6 meters but less than 30 meters. most of the time this typeadvantages
1. dilution may occur but 100% of the ore is usually recovered from the stope. 2. pillars that are left in place can be removed once adjacent stopes have been backfilled. 3. large scale blasting lowers costs. 4. stopes may be drilled before andesigndevelopmentequipmentsupportsafetyeconomicsreferencessublevel open stoping is a highly mechanized mining method utilizing a wide range of equipment for drilling and mucking. typically production drilling is carried out by highefficiency column and arm longhole drills or dth drill rigs. these systems use electric drive instead of hydraulic and have high pressure pneumatic dth hammers or rotary percussion drilling systems. it is with recent advantages in drilling technology that these systems have revolutionized sublevel stoping operations. mucking may bsublevel open stopping assignmentdec , · dec , · sublevel open stopping sublevel stoping is a vertical mining method in which a large open stope is create within the vein. this open stope is not meant to be occupied by the miners therefore ,all work of drilling and must be performed from sublevel within the ore block. three different variations of sublevel stoping are practiced 188.8.131.52 sublevel (open) stoping abc 3 testing siteaug 03, 10· 8.3.3 sublevel (open) stoping. if we had a stronger and more competent host rock, we could dispense with the need to keep ore in the stope to support the hanging wall as we do vcr mining. indeed, such deposits do exist, and when they do, we can employ the open stoping method. there are different variations, but essentially, we delineate stopesmachinery used for sub level open stoping mining methodunderground mining (hard rock) underground mining (hard rock) a three sublevel caving an orebody hosted in strong selfsupporting rock may be mined by an open stoping method amachinery used for sub level open stoping mining method
sublevel stopping mining method file coproductionjun , · 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. sublevel stoping mining methods are very popular in canadiansublevel open stoping queensminedesignwikisublevel open stoping originated in the early 00s in iron ore mines in michigan, usa. it was developed over the s from a method originally known as short hole bench and train mining.generally a large scale open stoping method, it is often referred to as long hole or blast hole stoping.sublevel stoping wassarawhen conventional drilling methods are used for sublevel stoping, with long distances between the levels, it is common to drill an undercut to avoid the risk of high blast hole deviation. however, an undercut is both costly and time consuming since it literally turns one stope into two.underground mining methods and equipmentmethods and brief explanations of the techniques of roomandpillar mining, sublevel stoping, cutandfill, longwall mining, sublevel caving, and block caving. the second section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers. 1.file size 605kbmachinery used for sub level open stoping mining methodunderground mining (hard rock) underground mining (hard rock) a three sublevel caving an orebody hosted in strong selfsupporting rock may be mined by an open stoping method amachinery used for sub level open stoping mining methodsublevel stoping introduction to sublevel stopingintroduction 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 0 mm (7% in.) diam, with lengths up to 90 m (300 ft).