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Future Block and Panel Caving Mining Systems and

A study of Isolated Draw Zones in Block Caving Mines by means of a large 3D Physical Model. International Journal of Rock Mechanics and Mining Sciences, vol 44, issue 6, pp. 860-870. 8. Castro R, Trueman, R. 2008. An experimental review of gravity flow for block and panel caving applications In Proceedings of Massmin2008, 9-11 of June, Lulea,

LONG TERM PLANNING OF BLOCK CAVING OPERATIONS

LONG TERM PLANNING OF BLOCK CAVING OPERATIONS USING MATHEMATICAL PROGRAMMING TOOLS By ENRIQUE RUBIO B. Sc., Universidad de Chile, 1998 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE STUDIES Department of Mining

STUDY OF THE INFLUENCE OF INTERACTIVE DRAW UPON

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.

THE UNIVERSITY OF QUEENSLAND Bachelor of Engineering

A thesis submitted in partial fulfilment of the requirements of the Bachelor of Engineering degree in Mining Engineering UQ Engineering Faculty of Engineering, Architecture and Information Technology Development blasting operations in Sub-level and block caving mines play a significant role in

Block caving QueensMineDesignWiki

Block caving. Block caving is an underground mining method that uses gravity to exploit massive, steeply dipping ore bodies located at depth. These ore bodies are generally low grade in nature and are too deep to be extracted through open pit mining. The technique is commonly used to extract low grade copper, copper-gold, iron and molybdenum

Cave mining-thestateoftheart SAIMM

Cavemining-thestateoftheart byD.H.Laubscher* Introduction Cavemining refers toallmining operations in whichtheorebody cavesnaturally after undercutting andthecavedmaterial isrecovered through drawpoints. Thisincludes blockcaving, panelcaving, inclined-drawpoint caving, and frontcaving. Cavingisthelowest-cost underground mining method provided

Surface subsidence associated with block caving

May 27, 2012 4. Block Caving and Associated Subsidence 4 Block cave mining is characterized by caving and extraction of a massive volume of ore which translates into a formation of major surface depression or subsidence zone directly above and in the vicinity of the mining operations. The ability to predict surface subsidence associated with block caving

BAB III LANDASAN TEORI UNISBA

Ilustrasi Penambangan Block Caving 3.1.3 Sistem Produksi Seperti pada penambangan bawah tanah untuk batuan keras lainnya, daur development dan produksi terpisah dengan jelas. Masing-masing mengunakan mekanisasi tinggi tetapi peralatan yang digunakan sesuai dengan fungsinya sendiri- sendiri. Produksi pada tambang block caving terdiri dari : 1.

PREDICTING FRAGMENTATION CHARACTERISTICS I

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.

Incorporation of 3-D Mixing in Long-term Production

The major novelties of this thesis are: determination of the best mining direction in the block caving layout and defining precedence of drawpoints accordingly, NPV maximization for block caving mines using mathematical programming where technical constraints of the operations are

MASTER'S THESIS DiVA portal

In order to complete this thesis work, a literature study on sub level caving mining, shock wave interactions in blasting, effect of delay timing and a study on fragmentation models has been done. The overall process involved a literature study, construction and

STUDY OF THE INFLUENCE OF INTERACTIVE DRAW UPON

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.

A transition from a large open pit into a novel

Jun 01, 2019 The business case to continue with the mining of the Chuquicamata orebody is to change from the current large open pit to a novel macroblock variant block caving geometry. This requires a production rate of 140,000 t/d (50 Mt per annum), with a continuous material handling system to achieve the 7-year ramp-up to full production.

(PDF) Open pit or block caving? A numerical ranking method

A switch from open pit mining to block caving mining could be another great development in this century. However, even though an increasing number of mines are being developed using block caving

Surface subsidence associated with block caving

May 27, 2012 4. Block Caving and Associated Subsidence 4 Block cave mining is characterized by caving and extraction of a massive volume of ore which translates into a formation of major surface depression or subsidence zone directly above and in the vicinity of the mining operations. The ability to predict surface subsidence associated with block caving

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

BAB III LANDASAN TEORI UNISBA

Ilustrasi Penambangan Block Caving 3.1.3 Sistem Produksi Seperti pada penambangan bawah tanah untuk batuan keras lainnya, daur development dan produksi terpisah dengan jelas. Masing-masing mengunakan mekanisasi tinggi tetapi peralatan yang digunakan sesuai dengan fungsinya sendiri- sendiri. Produksi pada tambang block caving terdiri dari : 1.

(PPT) METODE PENAMBANGAN RUNTUHAN / CAVING Iqbal

METODE PENAMBANGAN RUNTUHAN (CAVING) PENDAHULUAN Metode ambrukan (caving method) adalah cara penambangan endapan bijih atau batubara pada tambang bawah tanah dengan cara pengambrukan yakni meruntuhkan deposit bijih atau batubara, karena adanya pengaruh gaya grafitasi K LA SIFIK A SI M ETO D E P EN A M B A N G A N R U N TU H A LONGWALL MINING N (C AV ICAVING SUBLEVEL NG) TOP SLICING BLOCK

LINKING THE FRACTURE INTENSITY OF AN IN SITU ROCK

Block caving is an underground mining method, that uses gravity to extract massive orebody located at depth. Mine schedule and operation can be heavily influenced by fluctuation in fragmentation size. This thesis focused on studying the influence of natural rock mass characterization on the unexpected fragments.

Draw Control Strategy for diva-portal

challenge. In caving operations, the draw co ntrol regulates loading at the draw point by providing information on when to stop loading. Loading at the draw point for caving operations, such as sublevel caving (SLC), is much more complex than loading for other underground mining methods, for two primary reasons: 1.

Paper: Draw rate optimisation in block cave production

Abstract: Among the underground mining methods available, caving methods are favoured because of their low cost and high production rates. Block caving operations offer a much smaller environmental footprint compared to equivalent open pit operations due to the much smaller volume of waste to be moved and handled.

A study of subsidence at the San Manuel Mine, Tiger, Arizona

A Thesis submitted to the faculty of the Department of Mining and Metallurgical Engineering in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Development of Blocks for Caving.. 26 Chapter III Surface Expression of the Underground

PREDICTING FRAGMENTATION CHARACTERISTICS I

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.

Incorporation of 3-D Mixing in Long-term Production

The major novelties of this thesis are: determination of the best mining direction in the block caving layout and defining precedence of drawpoints accordingly, NPV maximization for block caving mines using mathematical programming where technical constraints of the operations are

MASTER'S THESIS DiVA portal

In order to complete this thesis work, a literature study on sub level caving mining, shock wave interactions in blasting, effect of delay timing and a study on fragmentation models has been done. The overall process involved a literature study, construction and

(PDF) Open pit or block caving? A numerical ranking method

A switch from open pit mining to block caving mining could be another great development in this century. However, even though an increasing number of mines are being developed using block caving

A transition from a large open pit into a novel

Jun 01, 2019 The business case to continue with the mining of the Chuquicamata orebody is to change from the current large open pit to a novel macroblock variant block caving geometry. This requires a production rate of 140,000 t/d (50 Mt per annum), with a continuous material handling system to achieve the 7-year ramp-up to full production.

THE PREDICTION AND OCCURRENCE OF CHIMNEY

Chimney caving is the most dominant type of subsidence in southwestern Pennsylvania. Since chimney caves seem to occur sporadically, steps must be taken to better predict when and where such events will transpire.

Numerical modelling of surface subsidence Summit

These are intended as an aid to engineering judgment for decision makers at the pre-feasibility and mine design stages. This study also addresses one of the most challenging problems in mining rock engineering the interaction between block cave mining and a large overlying open pit, focusing on caving induced step-path failure initialization.

INOVASI SISTEM PENYANGGAAN DI TAMBANG BAWAH

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 DOZ yang masih aktif sampai saat ini dan 1590m di bawah

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.

Draw Control Strategy for diva-portal

challenge. In caving operations, the draw co ntrol regulates loading at the draw point by providing information on when to stop loading. Loading at the draw point for caving operations, such as sublevel caving (SLC), is much more complex than loading for other underground mining methods, for two primary reasons: 1.

Oyu Tolgoi Rio Tinto

Oyu Tolgoi is one of the largest known copper and gold deposits in the world. It is also one of the most modern, safe and sustainable operations in the world. 2020 figures. Oyu Tolgoi also produced 182K ounces of gold and 876K of ounces of silver. Rio Tinto owns 50.8% of Turquoise Hill Resources, which owns 66% of Oyu Tolgoi.

EXPERIMENTAL ASSESSMENT OF HANG UP AND SECONDARY

block caving”, paper presented in Caving 2014, pp 299 306. The article is a summary of the preliminary results of the investigation, related to the flow ability of the granular material under confinement test. Experimental tests Secondary fragmentation model Hang up predriction Aplication to Block Caving mining

(PDF) MINING ROCK MASS RATING Erick Alan Academia.edu

Penyesuaian pada MRMR meliputi pelapukan, tegangan terinduksi,joint orientasi dan efek peledakan (Laubscher 1990). Selama beberapa tahun, sistem MRMR menjadi sistem klasifikasi yang paling banyak digunakan pada block caving. Laubscher dan Jakubec (2001) baru-baru ini menerbitkan beberapa revisi pada sistem MRMR. 3.2.4.1.

A new cavability index in block caving mines using fuzzy

Jul 01, 2015 1. Introduction. Block cave mining is a mass mining method that allows for the bulk mining of large, relatively lower grade, ore bodies. In terms of cost and rate of production, bulk mining of this kind yields a substantial return per ton and has a higher rate of production than other underground methods.