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Jul 25, 2018· 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.
A look at the underground mining process The Resolution Copper deposit lies more than a mile beneath the surface. The most viable way to recover this ore body is by going underground, using a process called block caving. Block caving is a proven mining method using advanced technologies. Here''s how it works. Ore, rock containing . Continued
Dec 01, 2018· Block cave mining is the only underground method that can offer comparable open pit production rates and operating costs. For new developments, block cave mining offers the further advantage of a smaller surface footprint with significantly less waste disposal requirements.
Caveminingthestateoftheart * Introduction Cavemining refers toallmining operations in whichtheorebody cavesnaturally after undercutting andthecavedmaterial isrecovered through drawpoints. Thisincludes blockcaving, panelcaving, inclineddrawpoint caving, and frontcaving. Cavingisthelowestcost underground mining method provided ...
Capitalintensive operation. The blockcave mining method is capital intensive and can cost anywhere between 2 and 10 billion. While that is comparable to the cost of starting an openpit mining ...
these mining methods. As caving has proven to be a safe and effective mining method, its popularity has increased around the world." BLOCK ANd pANeL CAVING Block caving is an underground mining method that uses gravity to exploit massive, steeply dipping orebodies located at depth, particularly those with disseminated mineralisation or that are
Block caving is being looked to as one method of bulk mining to access these ores, as it is recognised as one of the most economic underground mass mining methods to extract deep, low grade ...
Initial capital investment for the mining methods ranged from 77,200,000 for chamber and pillar, to 122,872,000 for block caving, using LHD''s. Mining costs, including all direct, indirect and ...
Jul 14, 2014· Introduction The one u/g mining method that has the potential to rival surface mining in output and cost is block caving. Block caving is the mining method in which masses, panels, or blocks of ore are undercut to induce caving, permitting the broken ore to be drawn off below. If the deposit is overlain by capping or bounded by drawing the ore.
Sublevel Caving . Sublevel Caving is one of many different methods for underground hard rock mining. It is a largescale mining method suitable for large ore bodies with a steep dip and a rock mass with a host rock in the hanging wall will fracture under controlled conditions.
Caving Methods of Mining. There are three distinctive methods of working large deposits that involve, in some way, the factor of caving. Slightly different names are in use, but those that are simple as well as descriptive are top slicing, sublevel caving, and block caving.
Underground mass mining methods present several geotechnical challenges and risks inherent with block cave mining environments. Underground mining methods such as block, panel, and sublevel caving continue to be the primary choice for deeply situated massive orebodies, due to the high production rates and low operating costs involved.
Block Caving . Block caving is largescale mining method that allows for huge volumes of rock to be extracted efficiently. However, the development time before production starts is longer compared to other mining methods. By drawing rock from the extraction level in the lower part of the mine.
Block Caving and Pebble Mine Block caving has been proposed for a section of the proposed Pebble Mine in southern Alaska to excavate a portion of one of the world''s largest gold, copper, and molybdenum deposits. Part of the Pebble deposit is buried roughly 1,000 to 7,000 feet underground.
Impacts of Block Cave Mining to Oak Flat Campground, Apache Leap, and Gaan Canyon. ... about mining methods and exempts the land exchange from any environmental analysis until, at best, after the fact, the company wishes to use a mining method called block cave mining.
depth which would not support a more expensive mining method. Cave mining methods are becoming more popular due to relatively higher metal prices, projected supply and demand forecasts, and a lower discovery rate of significant new surface deposits. Cave mining is the primary underground mining method for extracting large Cu Au porphyry ...
Feb 10, 2018· Block Caving Mining Method Black Diamond Drilling Services Australia PTY LTD. ... Cut and fill mining method Epiroc Duration: 3:01. Epiroc 2,406 views. 3:01.
Block 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.
Block caving is a gravitybased underground mining method that involves breaking up the rock mass located at depth into pieces. This method is particularly suitable for lowgrade minerals or with disseminated mineralization.
Block caving definition, a method of mining a large block of ore by systematically undercutting so the ore will cave. See more.
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 ...
stoping, cutandfill, longwall mining, sublevel caving, and block caving. The second section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers. 1. Underground Mining Methods Classification of Underground Mining Methods
This first comprehensive block caving publication was coauthored by several industry experts, including Dr. Alan Guest and Jarek Jakubec of SRK Consulting (Canada) Inc. Unfortunately, the distribution of this publication was not widely available. Meanwhile the demand for practical guidelines on cave mining was increasing as new projects developed.
This sequence of mining is no longer widely used. Today most mines use a panel system, mining the panels sequentially or by establishing a large production area and gradually moving it forward as the first area caved becomes exhausted. The term ''block caving'' is used for all types of gravity caving methods.
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