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.
Sublevel caving is a relatively safe mining method since the operations take place in small areas at a time and are highly mechanized. The uniformly distributed nature of generally 5mx3.7m sublevel nature of drifts aids in the safety of this …
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 section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers. 1.
Initial mining at the Copper Canyon operation consisted of sublevel stopes for the wider ore sections and shrinkage stopes for the narrow sections where ore widths averaged about 15 ft. After some experience and a study of comparative results on completed stope blocks, sublevels were substituted for shrinkage stopes even in the narrow ore widths.
Sublevel stoping, sublevel caving, top-slicing, and block-caving require more stope preparation before ore extraction can begin. In sublevel stoping (a form of open stoping), ore chutes, manway, and "starting raises" must be put up and one or more drifts driven on each sublevel (fig. 60, B).
Sublevel 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 high-efficiency column and arm longhole drills or DTH drill rigs.
Sublevel Stoping Predominant equipment used in loading and drawpoints until the 50s transport: scrapers / slushers overshot loaders transport on rails.
Equipment Sublevel open stopping is a highly mechanized mining method utilizing a wide range of equipment for drilling and mucking. Typically production drilling is carried out by high-efficiency column and arm long hole drills or DTH drill rigs.
Sublevel open stoping: design of the O640, L651 and N 659 sub level open stopes in the 3000 orebod y of the Mount Isa copper mines, Queensland …
slice. Mining continues upwards towards the surface until the ore body is depleted. Sublevel Caving Sublevel caving is usually carried out when mining of the ore body through an open pit method is no longer economically feasible. Mining now proceeds underground, underneath the open pit. At first, both a raise and a network of tunnels are made.
Mining Mining Equipment. By Kerry Taylor-Smith 26 Mar 2021. The future of mining equipment, and vehicles specifically, is in electrification – both from an environmental and economic efficiency perspective. Electric mining equipment, like this excavator unveiled in 2019, could be key to tomorrow's industry (Credit: Roman Korotkov/Shutterstock)
Access Free Underground Mining Methods And Equipment Eolss ... and sublevel caving make up this comprehensive text. Numerous tables and figures enhance the extensive material found in each chapter. An excellent teaching tool and source book, Techniques in Underground Mining is a must for any mining student or
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).