Last edited by Samulmaran
Wednesday, August 12, 2020 | History

3 edition of Undercut Block-Caving Method of Mining in Western Copper Mines. found in the catalog.

Undercut Block-Caving Method of Mining in Western Copper Mines.

United States. Bureau of Mines.

Undercut Block-Caving Method of Mining in Western Copper Mines.

by United States. Bureau of Mines.

  • 303 Want to read
  • 36 Currently reading

Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesInformation circular (United States. Bureau of Mines) -- 6350
ContributionsGardner, E.
ID Numbers
Open LibraryOL21737442M

  The top m of the orebody is currently being extracted by block caving, the undercut dimensions measuring m in length by m in width. This has the potential to open up many other deposits around the world using this low-cost, but safe, mining method." Premier diamond mine [11] in South Africa plans to implement a block cave at a. Sublevel Caving: A Fresh Look at this Bulk Mining Method p. Panel Caving p. Henderson Mine p. Palabora Underground Mine Project p. Block Caving Lift 1 of the Northparkes E26 Mine p. Preundercut Caving in El Teniente Mine, Chile p. Premier Diamond Mine p. Block Caving the EESS Deposit at P.T. Freeport Indonesia p.

# Gardner E. D. UNDERCUT BLOCK-CARGIN METHOD OF MINING IN WESTERN COPPER MINES wps light wear vg 44 pp., 35 figs. Price: $ (stock#USBMIC) # Crabtree E. H. Jr. MILLING PRACTICE AT THE WHITE BIRD CONCENTRATOR, CANAM METALS CORPORATION, PICHER OKLAHOMA.   Tongkuangyu Copper Mine is currently the only mine in China employing block caving. It comprises two large orebodies known as the No 4 orebody and the No 5 orebody. They are approximately 50° in dip angle, 80 to m in width and – m in strike length. The two orebodies are separated by a distance of – m.

a block caving operation, with modified stope design and belt conveyor ore haulage. As shown in Figure 1, the mine development plan called for approximat m of drifting in two levels. After a detailed trade-off study, the mine elected to use a TBM for all development work. Figure 1. TBM tunneling route. Figure 5 is a map of inactive coal mines. Mining methods, depth of mining, and amount of subsidence varies across the state and within individual coalfields. Coal mining methods also influence the kind and amount of subsidence that can appear at the surface. back to table of contents Mining Methods Room and Pillar Mining.


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Undercut Block-Caving Method of Mining in Western Copper Mines by United States. Bureau of Mines. Download PDF EPUB FB2

Bulk-mining methods are a necessary component of economically mining massive, low-grade porphyry copper, gold, molybdenum and diamond deposits, and block caving is the method of. Undercut Block-Cargin Method of Mining in Western Copper Mines,USBM Information Circular, I.

44 pages and 35 figures. [Gardner, E. D.] on *FREE* shipping on qualifying offers. Undercut Block-Cargin Method of Mining in Western Copper Mines,USBM Information Circular, I.

44 pages and 35 : E. Gardner. The Pre-Undercut Caving Method at the El Teniente Mine, Codelco Chile A Key to Success for Block Caving Mines.

Chen, D. / Australasian Institute of Mining and An Experimental Study on Large-Diameter Longhole Mining of High Stope at Anqing Copper Mine. Renfa, W. / Qian, X. / Zhiming, J. / Australasian Institute of Mining. Caving Underground Mining Methods (longwall, Sublevel caving, Block caving) 1.

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.

Mining by a deep-level block caving system has produced a world record - million tons of copper ore for hoisting - at Magma Copper Co. 's San Manuel underground mine in Arizona.

Underground Mining Methods presents the latest principles and techniques in use today. Reflecting the international and diverse nature of the industry, a series of mining case studies is presented covering the commodity range from iron ore to diamonds extracted by operations located in all corners of the world.

Industry experts have contributed 77 chapters/5(5). In underground mining, block caving is the only method with the costs comparable to surface mining methods, especially open pit mining.

A switch from open pit mining to block caving mining could be. The use of block caving was first reported in in the Michigan iron and copper mines where large blocks of ore were undercut, allowing the ore to mine itself under gravity and crush through comminution to a size suitable for handling.

Bulk mining methods. Block caving is used to mine massive steeply dipping orebodies (typically low grade) with high friability. An undercut with haulage access is driven under the orebody, with "drawbells" excavated between the top of the haulage level and the bottom of the undercut.

The drawbells serve as a place for caving rock to fall into. United States Bureau of Mines Information Circular Undercut block-caving method of mining in Western Copper mines.

By E. Gardner. 44p. PLUS 35 figures. Thoroughly illustrated, a well-done comprehensive work on this type of mining with examples from specific mines. $ block caving (as high as t/manshift). The disadvantages are higher upfront capital costs given the much larger scale of mining and longer development times.

Block caving will only get more important: Rio is likely to have expanded block cave operations at Northparkes and new block caves at Oyu Tolgoi. Production with block caving originally (Phase 1 project) started at Tongkuangyu from the first undercut at a depth of m below the surface and was designated as Lift m in late and caving has continued to the present.

During the last 25 years, Tongkuangyu has mined three lifts – Lift m, m, and m. ISBN: OCLC Number: Description: x, pages: illustrations: Contents: Underground Mining Methods and Applications --General Planning of the Noncoal Underground Mine --Planning the Underground Mine on the Basis of Mining Methods --Cost Estimating for Underground Mines --Mineral and Metal Prices L Mechanisms, Instability, and Trends --Mining.

Panel and pre-undercut caving methods, variations of the standard block caving, were as introduced in andrespectively to exploit primary copper ore. Taking advantage of gravity, block caving recovers the disassembled ore in regular ‘mine block’ areas, at the same time panel caving develops a continuous front cave, which sometimes can be m long (Fig.

This amateur video shows a bucket wheel excavator working at a coal mine in Western Germany. Bucket-wheel excavators (BWEs) are heavy equipment used in surface mining and civil engineering. Block Caving Process Animation. 5 ABB Appointed to Modernize Zijin Mining Group’s Copper Mine in Serbia.

6 NIR Spectroscopy Guide for QC Laboratories. INTRODUCTION: Block cave mining is defined as a mining method which involves undermining an ore body, allowing it to progressively collapse under its own weight. It is a mass mining method that allows for the bulk mining of large, relatively lower grade orebodies.

It. While block caving presents an economic means to develop lower grade ore deposits, it often leads to significant ground deformations threatening the safety of overlying mine infrastructure.

For guidance on relationships between caving depth and surface subsidence, a comprehensive cave mining database was developed and the database clearly shows caving-induced surface deformations tend to be. ISBN: OCLC Number: Description: x, pages: illustrations, maps ; 29 cm: Contents: Underground Mining Methods and Applications --General Planning of the Noncoal Underground Mine --Planning the Underground Mine on the Basis of Mining Methods --Cost Estimating for Underground Mines --Mineral and Metal Prices L Mechanisms, Instability, and Trends --Mining.

This book presents the latest mining principles and techniques in use today. Reflecting the international and diverse nature of the industry, a series of mining case studies is presented covering the commodity range from iron ore to diamonds extracted by operations located in all corners of the world.

Palabora Underground Mine Project: p. Block Caving Lift 1 of the Northparkes E26 Mine: p. Preundercut Caving in El Teniente Mine, Chile: p. Premier Diamond Mine: p. Block Caving the EESS Deposit at P.T. Freeport Indonesia: p. Finsch Mine: Open Pit to Open Stoping to Block Caving: p.

Cave Mining-The State of the Art. block caving developed in the iron ore mines, northern Michigan, USA ¾Early 20th century: The block caving method developed in the USA for iron ore and then copper mining in the western states ¾s: Block caving started in Canada and Chile ¾Late s: Block caving introduced into southern African diamond mines and then chrysotile asbestos.Several mining operations are considering the switch from surface to underground in order to mine deeper resources.

When making this switch block cave mining is often considered to minimize costs. The primary objective of this study is to investigate the mechanics of rock slope movements and failure in response to the block caving process.

Different potential failure modes are investigated as.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.