thesis sistem block caving mining

Characterisation of Block Cave Mining Secondary

2019-2-11 Block cave mining is a widely employed mining method around the world due to its low operating cost. One of the key factors that affects block caving mine’s productivity is fragmentation; accordingly, significant efforts have been made and are currently being made to study

Phd Thesis: Numerical modelling of surface

2014-5-16 Phd Thesis: Numerical modelling of surface subsidence associated with block caving mining using FEM/DEM modelling approach 1. NUMERICAL MODELLING OF SURFACE SUBSIDENCE ASSOCIATED WITH BLOCK CAVE MINING USING A FINITE ELEMENT / DISCRETE ELEMENT APPROACH by Alexander Vyazmensky Master of Applied Science, University of British Columbia, 2005 THESIS

The design & operating philosophies of panel vs block

Richardson, MP 1981, ‘Area of draw influence and drawpoint spacing for block caving mines’, D R Stewart (ed.), Design and Operation of Caving and Sublevel Stoping Mines, Society of Mining Engineers, AIME: New York, pp 149-156.

(PDF) Production Scheduling in Block Caving with

2017-12-8 Block caving methods, when operated under favourable rock mass conditions, can achieve higher production rates and lower operating costs than other various existing underground mining

STUDY OF THE INFLUENCE OF INTERACTIVE DRAW

2017-8-22 Over the last 10 years, the trend toward the mining of deeper, higher tonnage deposits, and lower grade orebodies have made caving mining methods (Block and Sublevel) increasingly attractive to the global mining industry. This is due to their low mining cost. During this period the scale of these caving operations has increased significantly.

Block Caving groundtruthtrekking

2012-12-21 Block caving is an underground hard rock mining method that involves undermining an ore body, allowing it to progressively collapse under its own weight. It is the underground version of open pit mining. In block caving, a large section of rock is

Paper: Deep sublevel cave mining and surface

Abstract: With increasing mining depths and excavation volumes comes not only increased rock stresses and more difficult underground mining conditions, but also increased surface effects, in particular from cave mining. The surface effects of deep sublevel cave mining are not well understood and are further explored in this paper, through a case study of the LKAB Kiirunavaara Mine.

Using numerical modelling to represent parameters

The Laubscher’s caveability chart has been considered a reference in block caving mine design given the limited experience in cave mining when it was first proposed. This approach uses the Mining Rock Mass Rating (MRMR) to describe the rock mass quality (Laubscher & Taylor 1976), which is

Application of simulation techniques in development

The mining industry globally is moving towards exploiting more mineral deposits by underground methods for several reasons. Large scale underground block/panel caving mining methods are becoming more popular due to the low operating costs associated with economies of scale. However, the planning for a caving mine is very challenging.

(PDF) Underground mining Methods

2021-10-24 Caving (i.e., 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.

Characterisation of Block Cave Mining Secondary

Predicting fragmentation characteristics of a block caving

2020-4-2 mined by block caving. If an orebody is suitable for mining by block caving, the fragmentation characteristics will have a bearing on the method of ore extraction. Suitability of an Orebody to Block Caving Ideally the orebody should be such that the rock within the stope fails readily and the area outside the stope remains intact.

The design & operating philosophies of panel vs block

Block caving: A new mining method arises

Block caving is a new alternative method of developing new mines or extending the operation of open pits. Block caving is an underground hard rock mining method that involves undermining an ore body, allowing it to progressively collapse under its own weight. It is the underground version of open pit mining.

THE UNIVERSITY OF QUEENSLAND Bachelor of

2019-10-14 Development blasting operations in Sub-level and block caving mines play a significant role in the mine development cost and efficiency. Development at Ernest Henry mine accounts for a significant portion of the mine budget with the possibility of potential savings by the optimisation of the blasting and implementation practices.

Investigation of stress fields occurred in the block

The modeling with the finite element method was employed to study the block caving process for mining the Milas diasporite deposit in Western Turkey. The stress distribution in the vicinity of production and haulage levels is evaluated applying an elasto-plastic rock mass model.

Physical and Numerical Modelling of Cave Propagation

An Extended Conceptual Model of Caving Mechanics. PhD thesis, The University of Western Australia. Cumming-Potvin, D. and Wesseloo, J. (2014). Assessing the state of the rock mass in operating block caving mines: A review. 3rd International Symposium on Block and Sublevel Caving, Castro, R. Santiago, Universidad de Chile: 118-127.

Surface Subsidence and Collapse in Relation to Extraction

2010-11-16 Progress of subsurface subsidence induced by the block caving mining method. Caving is initiated by removing support (a) and exceeding the span (b). Removing ore creates void into which additional rock can fall (c) and if unchecked the broken zone can breach the surface (d). (Modified from Obert and Duvall,1967.)

Productivity of a Continuous Mining System for Block

Repositorio académico de la Universidad de Chile. Tesis, artículos y libros publicados en formato digital con distintos niveles de acceso

INOVASI SISTEM PENYANGGAAN DI TAMBANG BAWAH

2021-7-21 Block Caving. Tambang DMLZ berada di dalam satu bagian badan bijih dengan area tambang GBT 1 & 2, IOZ, dan DOZ, lokasinya terletak pada sistem deposit East Ertsberg Skarn Sistem (EESS) (Gambar 1), dimana terletak 410m dibawah tambang

Predicting fragmentation characteristics of a block caving

Surface Subsidence and Collapse in Relation to Extraction

THE UNIVERSITY OF QUEENSLAND Bachelor of

Investigation of stress fields occurred in the block

An airblast hazard simulation engine for block caving

2018-7-1 Airblast in block caving situations is a very dangerous situation with potential loss of life for operators and damage to mining equipment. 1 Airblasts occur when air pockets are present within the material that is currently being extracted through the drawpoints (). 2 As the material close to the drawpoints (defined as the muck-pile) becomes stagnant, the block falling at the top of the air

METHODOLOGY FOR OPTIMIZATION OF COEFFICIENT

2017-10-19 caving mining method, it is made basic model (block diagram) for the methodology, which is shown in Figure 1. Because this science paper considers the method of ore exploitation with sublevel caving mining, in which the coefficients of recovery/losses and ore dilution are in mutual

Physical and Numerical Modelling of Cave Propagation

Evaluation of intensive preconditioning in block and panel

2017-4-28 (2017). Evaluation of intensive preconditioning in block and panel caving part II, quantifying the effect on seismicity and draw rates. Mining Technology: Vol. 126, No. 4, pp. 221-239.

Productivity of a Continuous Mining System for Block

Repositorio académico de la Universidad de Chile. Tesis, artículos y libros publicados en formato digital con distintos niveles de acceso

1 Advantages and disadvantages of the seismic

The block caving mining process limits access to the orebody, in turn limiting opportunities to gauge the state of the rock mass once the rock mass degradation and caving process has initiated.

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