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Sub level stoping

  • Sub Level Stoping by JOSE CIFUENTES ORELLANA

    A) ARRANQUE DE BANQUEO CON BARRENOS PARALELOS. En criaderos verticales este sistema tiene la ventaja de poder dar un espaciado uniforme a los barrenos con unas condiciones ideales de distribución de energía y de rotura. Sub Level Stoping (Realce por subniveles) SIGUE EN EL PDF

  • SUB-LEVEL OPEN STOPING: DESIGN OF THE O640, L651 AND

    sub-level open stoping and the design process followed. The objective here is to present a design methodology applicable to sublevel open stoping, but also to then bridge the gap between theory and practice by applying said methodology to an actual design example.

  • SubLevel Stoping - Introduction to Sublevel Stoping

    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).

  • sub level stoping Minería Science

    SUB LEVEL. STOPING calculos Aire comprimido y perforacin 6 de Julio de 2013. Sebastian Vergara Introduccin En la industria minera existen varios mtodos de explotacin, entre ellos el mtodo sub level stoping, el cual dar a conocer y estimar los caculos para cada uno de los factores que influyen en su extraccin (Rendimiento de scoop, aceros, costos, etc).. mtodo sub level stoping

  • Major Mines & Projects Olympic Dam Mine

    Sub-level stoping; Summary: The Olympic Dam ore body begins about 300 metres below the surface and continues to a depth of more than 1 kilometre. The existing mining operation employs a sub-level open stope method of underground mining. The underground operation includes crushing stations, vertical ventilation shafts and an automated rail

  • Production scheduling optimisation for sublevel stoping

    Oct 01, 2020· Among underground mining methods, sublevel stoping are a commonly used method in large-scale 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.

  • Backfill Practices for Sublevel Stoping System SpringerLink

    Sublevel stoping mining methods are generally employed to extract steeply dipping tabular ore deposits characterized by relatively long strikes and having various thicknesses. Ore is recovered from each sublevel in a planned sequence of primary and secondary stopes with delayed backfill in a manner to create a stress shadow to avoid high stress

  • Economic Comparison of Drilling Systems in Sublevel

    apply sublevel stoping is 55 MPa normally. Also sublevel stoping doesnt have a limitation in deep rate. Up to now sublevel stopping method has been applied in depth about 900 m under the surface. In ore bodies which have over 6 m width range, appropriate geometrical form is create to utilize drilling and blasting pattern with high production

  • Lecture 4: Underground Mining

    5) Shrinkage Stoping (Cont.) A large stope in the Treadwell gold mine, Alaska, USA 1908; an example of shrinkage stoping Note: Sublevel stoping differs from shrinkage stoping by providing sublevels from which vertical slices are blasted. In this manner, the stope is

  • SUBLEVEL STOPING by Jennifer Cossio - Prezi

    SUBLEVEL STOPING EXPLOTACIÓN VENTAJAS Y DESVENTAJAS VENTAJAS DESVENTAJAS *Perforación tiros radiales (abanicos) a partir de los subniveles dispuestos. *Uso de tiros largos (hasta unos 30 m) de 2 a 3 pulgadas de diámetro. *Uso de jumbos radiales electrohidráulicos y barras de

  • Major Mines & Projects Hope Bay Expansion Project

    The sub-level retreat (SLR) or longitudinal stoping method will be in use at all of the deposits. Stopes will be filled with a combination of CRF and unconsolidated rockfill. The undercut drift and overcut drift are driven on ore and mining would start from the lower access retreating out towards the main access drift.

  • Considerations for Sublevel Open Stoping - OneMine

    Sublevel stoping generally is a large-scale open stoping method. It sometimes is referred to as long-hole 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

  • SUB-LEVEL OPEN STOPING: DESIGN OF THE O640, L651

    sub-level open stoping and the design process followed. The objective here is to present a design methodology applicable to sublevel open stoping, but also to then bridge the gap between theory and practice by applying said methodology to an actual design example.

  • (PDF) Sublevel Stoping Underground Mining Methods

    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 , Australia. Department of Mining, University of

  • sublevel stoping - METALURGIA Y MINERIA SUB-LEVEL STOPING

    4 2 SUBLEVEL STOPING 2.1 Características. Alta producción. Productividad: 15 40 ton/ hombre turno. Producción caserón: más de 25.000 ton/mes. Método no selectivo. Bajo costo de minado (7-14 $/ton). Recuperación de 60 -80% dependiendo de los muros y losas. Dilución varía entre el 3- 10 % de material diluyente de la pared colgante y techo. Intensivo en desarrollos, pero todos son

  • Sublevel Stoping: Características, Ventajas y Desventajas

    El sublevel stoping es un método de excavación que consiste en fraccionar el yacimiento en varias secciones verticales, para dejar vacía a la unidad básica de explotación minera, llamada caserón.

  • Stoping - Wikipedia

    Stull stoping is a form of stoping used in hardrock mining that uses systematic or random timbering ("stulls") placed between the foot and hanging wall of the vein. The method requires that the hanging wall and often the footwall be of competent rock as the stulls provide the only artificial support.

  • Design and operation of caving and sublevel stoping mines

    Design and operation of caving and sublevel stoping mines / Daniel R. Stewart, editor ; sponsored by Mining & Exploration Division, Society of Mining Engineers of the American Institute of Mining, Metallurgical and Petroleum Engineers, Inc

  • SUB-LEVEL STOPING by Franklyn Maldonado Cosi

    SUB-LEVEL STOPING HUNDIMIENTO POR SUBNIVELES OBJETIVO DEL PROYECTO Con taladros en anillo o abanico Requisitos para su aplicación Con taladros largos en paralelo: Tajeo por Subniveles Aspectos generales del método a utilizar OBJETIVO ESPECIFICO El Tajeo por subniveles (Sublevel

  • Compare Stoping Methods of Mining

    Apr 05, 2017· Sublevel stoping requires considerable preparatory work in the form of entrance raises, starting raises or stopes, sublevel drifts, and in some instances the cutting or bulldozing chambers and installation of grizzlies. The sublevel development, however, serves thoroughly to explore and block out the ore body and to define its boundaries.

  • Mining - Blasthole stoping Britannica

    Mining massive deposits. Several of the methods described above (e.g., blasthole stoping, sublevel caving) can be applied to the extraction of massive deposits, but the method specifically developed for such deposits is called panel/block caving.It is used under the following conditions: (1) large ore bodies of steep dip, (2) massive ore bodies of large vertical extension, (3) rock that will

  • (PPT) SUBLEVEL STOPING Iqbal DACHI - Academia.edu

    Sublevel stoping ini melakukan drilling dan blasting dimana seluruh pekerjaan ini dilakukan dari setiap sublevel pada ore block. PENAMPANG MELINTANG SUBLEVEL STOPING SYARAT Syarat untuk melakukan Sublevel Stoping yaitu : 1. Dip deposit terjal (>45, bagusnya 60-90) 2. Endapan bijih dan batuan induk harus kuat dan keras 3.

  • Sublevel stoping - SlideShare

    Mar 27, 2012· Sublevel stoping 1. UNIVERSIDAD DE SANTIAGO DE CHILE FACULTAD DE INGENIERIA DEPARTAMENTO DE INGENIERIA EN MINAS TOPICOS AVANZADOS: MINERIA SUBTERRANEA* Alumnos: Juan Fuenzalida y Elizabett López Profesor: Edgar Adam Ayudante: Mauricio Cordero Fecha de Entrega: 4 de abril de 2011

  • Sublevel stoping Britannica

    In sublevel stoping, shorter blastholes are drilled from sublevels located at shorter vertical intervals along the vertical stope. A fairly typical layout is shown in the figure. In vertical retreat mining the stope does not take the shape of a vertical slot. Instead, the trough serves

  • Production scheduling optimisation for sublevel stoping

    Oct 01, 2020· Among underground mining methods, sublevel stoping are a commonly used method in large-scale 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.

  • Stoping Mining Methods - Metallurgist & Mineral Processing

    Apr 03, 2017· In the sublevel variation of open stoping, the stope faces retreat from the end of the ore body or stope limit longitudinally or (where the stopes are run across the lode) from one of its walls. The miners are always working under solid backs and have a safe avenue of retreat through the subdrifts to the manway raises. Slabbing of roof or walls

  • Definition of sublevel stoping

    The sublevels are connected by a starting raise at one end of the stope and by a passageway raise for entrance to them and the stope face at the other end. Chute raises connect the haulage level to the lowest sublevel, at which the tops of the chute raises are belled out to form mill holes.

  • 8.3.3: Sublevel (Open) Stoping ABC 123: Testing Site

    The progression of the sublevel blasting is coordinated spatially from sublevel to sublevel, so that the blasted ore from a sublevel is free to fall to the bottom of the stope where it will be drawn off. Figure 8.3.9 Sublevel stoping (blasthole method) using ring drilling and blasting into a slot Source: after Hamrin, 1982

  • Longitudinal longhole retreat - QueensMineDesignWiki

    Longitudinal longhole retreat is a branch of the generic mining method known as sublevel stoping. For longitudinal retreat the long axis of the stope is along (or parallel) to the strike of the orebody. It may also be referred to as bench stoping or sublevel benching.

  • Sublevel Stoping (version 2) Australia Mining Consultants

    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 long hole drilling and blasting from the drives.

  • Types of Underground Mining Method Comparison

    Sublevel Stoping This method, described by F. W. Sperr in the Engineering and Minting Journal of June 5, 1912, and by P. B. McDonald in the Mining and Scientific Press of July 5, 1913, is really a combination of several different methods of stoping.

  • Sublevel stoping..Underground mining methods

    Oct 22, 2014· H.Z. Harraz Presentation sublevel stoping 14 Slot initial  Slot: is a space for the expansion of the rock where the extraction begins in the conventional stope sublevel. The slot will the level of the roof of the stope extraction. It is opened from a slot raise and can be executed in various ways (conventional raising, raise boring,). 15.

  • SubLevel Stoping - Introduction to Sublevel Stoping

    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

  • Abstract - USGS

    Sublevel stoping, vertical crater retreat (VCR), sublevel caving, and cut-and-fill are all methods that can be applied to ore bodies where shrinkage stoping is feasible. The model is valid.for operations with daily mining capacities of 100 to 6,000 st/d. Base-case cost model

  • (PDF) Design and dimensioning of sublevel stoping for

    Design and dimensioning of sublevel stoping for extraction of thin ore ( < 12 m) at very deep level: A case study of konkola copper mines (kcm), Zambia March 2018 DOI: 10.18280/mmep.050104

  • 8.3.3: Sublevel (Open) Stoping ABC 123: Testing Site

    The progression of the sublevel blasting is coordinated spatially from sublevel to sublevel, so that the blasted ore from a sublevel is free to fall to the bottom of the stope where it will be drawn off. Figure 8.3.9 Sublevel stoping (blasthole method) using ring drilling and blasting into a

  • Evaluation of the use of sublevel open stoping in the

    Mar 01, 2021· The sublevel open stoping using fan blastholes with backfilling changes the temporal and spatial sequence of traditional mining of moderately dipping medium-thick orebodies.

  • Sub level stoping - SlideShare

    Jul 25, 2016· Esquema Sublevel Stoping Underground Mining Methods - Sublevel Stoping 5 Diámetro de taladros: 50 mm (2) - 200mm (7 7/8). Las longitudes pueden ser hasta 30 m. Recuperación 60-80% (depende de los muros y losas). Dilución varía entre 3-10% de material diluyente de la

  • Underground Stoping Practice & Methods

    Apr 04, 2017· In sublevel stoping (fig. 86) the ore is blasted out into an open stope and falls into funneled raises or mill holes, and no handling is needed except where benching down is done in two or more steps, when some shoveling may be necessary to clean off the lower benches. With block-caving, most of the ore broken in undercutting falls by gravity

  • Major Mines & Projects Freda Rebecca Mine

    A sub-level stoping mining method is predominantly employed and the ore is trucked to surface using a variety of articulated dump trucks. One-way haul distances are of the order of 3-3.7km 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

  • Major Mines & Projects Stillwater Mine

    Sub-level extraction by long hole, open stoping with hydraulic backfilling (10 15%) Overhand cut and fill (C&F) stoping, utilising either raisebore or Alimak for access ( 5%). Crushing and Grinding


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