Block caving is a largescale mining method that is particularly useful for mining lowgrade or disseminated ore bodies which are at too great a depth to be exploited through opencast mining. This mining technique gets its name from the layout of the mine which divides the ore into large sections or 'blocks'.
Preundercut Caving in El Teniente Mine, Chile p. 417 Premier Diamond Mine p. 425 Block Caving the EESS Deposit at Freeport Indonesia p. 431 Finsch Mine: Open Pit to Open Stoping to Block Caving p. 439 Cave MiningThe State of the Art p. 455 Foundations for Design p. 465 Rock Mass Properties for Underground Mines p. 467 The MRMR Rock Mass Classification for Jointed Rock Masses p. 475 Use .
MIN ENG 5932/4932: (Advanced) Underground Mining Methods Equipment Dr. Zeshan Hyder . Assistant Professor . ... cutandfill, block caving, longwall. It also deals with the selection of ... Planning the underground mine on the basis of mining methodby William Hustrulid . 3.
Dec 01, 2008· – Ridgeway underground ( ore) Ore Processing Complex Treating 23Mtpa – Conventional flotation circuit – Producing gold/copper concentrate and gold bullion Open pit underground both owner mining operations Contractors used for – Open Cut Mobile Fleet Maintenance – Project Engineering Management
Conducting such a test in a block caving mine is still considered not feasible, due to the fact that markers movement will be influenced by caving process, and the cost will be millions of dollars per test. The cost of carrying out such a test in a Sublevel caving mine is approximately 25,000 per test.
Progressive spalling • The process will continue until caving propagates through the entire block to surface or to the open pit above 25 35 45 1. Develop undercut level 3. Drill and blast undercut rings 2.
Guideline For Managing The Risk Of An Airblast In An Underground Mine . FOREWORD . The NSW Department of Primary Industries document MDG 1031 TR – Technical Reference Material for Managing the Risk of an Airblast is attached to this Guideline. It provides supporting reference material. This is a Published Guideline.
Apr 14, 2011· OZ MINERALS 2011 FIRST QUARTER REPORT 14 APRIL 2011 ... Block caving Sublevel caving ... Cadia East OyuTolgoi Hugo North Lift Ridgeway Deeps Carrapateena WafiGolpu Bingham Canyon NE mine Northparkes Lift 1 Northparkes E48 Grasberg IOZ Bingham Canyon SE mine Northparkes Lift 2 Grasberg DOZ
Kirunavaara mine in northern Sweden is a well known block caving mine that extracts ore from a finegrained magnetite that contains variable amounts of finegrained apatite. The 4500 m long orebody with widths ranging from 2150 meters has very sharp and distinct hanging wall and footwall contacts.
Apr 21, 2013· sublevel caving method cost estimation pdf. Posted at:April 21, 2013[ 2383 Ratings] ... block and panel caving, and sublevel caving make up this comprehensive text. ... Problem In an iron ore mine sublevel caving is used.
in sublevel caving are discussed elsewhere, for example Bull and Page (2000), Kvapil (2004), Hustrulid and Kvapil (2008) and Power and Just (2008). Arguably, the paper by Laubscher (1994) became the most widely used reference for cave mining design based on .
May 08, 2012· This video describes the process of underground longwall mining used in the Australian coal mining industry.
The mixing within the ore could be modelled using some of the latter flow simulators built to predict mixing at caving mines (see Castro et al., 2009, Pierce 2010).
Padcal DOZ DMLZ Chuquicamata UG Salvador Andina Sur Sur UG El Teniente New Mine Level Collahuasi UG Argyle Finsch Palabora Palabora L2 Koffiefontein Cullinan Kimberley CARRAPATEENA Northparkes Northparkes II Cadia East Ridgeway Deeps. Kucing Liar Grasberg UG Golpu. Planned Operation Operating Mines Que es el block caving?
Apr 17, 2015· A case study of tomography imaging has been carried out in DOZ ( Deep Ore Zone ) block caving mine, Tembagapura, Papua. Many researchers are undergoing to investigate the properties of DOZ cave not only outside but also inside which is unknown.
Openpit mining is a type of strip mining in which the ore deposit extends very deep in the ground, necessitating the removal of layer upon layer of overburden and ore. In many cases, logging of trees and clearcutting or burning of vegetation above the ore deposit may precede removal of the overburden.
A second pair of examples shown in Figure 2 requires a cable car for access on the one hand, and successive boat trips to faultblocked flooded sections of tunnel on the other. The contrasting stiffness and strength of intact rock and wet clay is easy to visualize. One may be .
A wet muck spill event at the Deep Ore Zone (DOZ) block cave mine of PT Freeport Indonesia was utilized as a case study as well as to validate the proposed method. The fuzzybased approach shows promising results in predicting wet muck spill events.
on Ridgeway Deeps block cave primary conveyor (6‐month period) MR Trial Readiness • An initial MR sensing trial (retrofittableinstallation) can provide a pod frequency vs grade histogram for an open pit copper mine. • Inform bulk sorting techno‐economic analysis with firm data relating to
ON BLOCK AND SUBLEVEL CAVING BACKGROUND The growing popularity of caving methods around the world is largely due to the very low production cost and the intrinsic safety associated with the mining approach. It is often the only viable mining method for some of the lower grade massive orebodies that are becoming too deep for open pit mining.
Figure 4: Mine planners use estimates for 100 meter blocks to generate data covering expected monthly production for each machine placement. Shown here are production estimates from January 2000 to March 2001 of B1, B2, D3 and total production estimates for a block at the 820 meter level from ycoordinate 29 to ycoordinate
Most popular method of stoping. Example: Shrinkage stoping, Cut and Fill stopes, Room and Pillar, Caving. ... SubLevel Caving Subsidence reaches surface at the Ridgeway underground mine ... >>Chat Online; FOURTH INTERNATIONAL SYMPOSIUM ON BLOCK AND . sublevel caving, mine fill, surface support and deep and high stress mining.
At the same time, the caving process gradually propagates upward and further into the orebody. Often, overly large fragments can block an extraction draw point. The culprit can be a single boulder or a stringed arch of smaller boulders. These blockages are referred to, by .
The underground mining method Kiruna currently employs is knownas largescale sublevel caving. This method is used for extracting ore from vertically positioned, fairly pure, large, veinlike deposits. The mine is divided into ten main production areas, about 400 meters (m) to 500 m in length.
extraction. The mine floor must provide a firm base for the moveable roof supports used in longwall mining. Large aquifers should not overlie the coalbed. Oil and gas wells that penetrate the mine are problematic, because pillars of coal must be left to protect the .