what is the difference between open cast and underground,difference between open pit mining quarry and underground difference between open cast mining shaft mining underground mining mainly consists of digging tunnels and shafts into the a number of different techniques can read more..difference between open cast mining , shaft mining and,1. open cast mining in which large pits are dug to excavate the ores lying at shallow depths beneath the surface of the earth. minerals that lie near the surface are also dug out by the process of quarrying. 2. deep shaft mining in which deep holes are made to reach the ore lying at great depth beneath the crust. 3..
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mining production activities. 3. the advantages of open pit mining. there are a number of advantages of open pit mining when compared to underground mining: open pits can sometimes be brought into production quickly. underground mining requires development (shaft sinking, adits, declines etc.) which might take years before production can start.
open pit mining pros & cons sciencing. open pit mining or strip mining is an extraction process for ore or fossil fuels that takes place at the surface of a mining site. worldwide, 40 percent of mining occurs at the surface, according to greenpeace international. compared with underground mining, surface mining is much more efficient.
what is an open-cast mine? open-cast mines use a slightly different process to underground mining, which was more commonplace in the 20th century. surface mining doesn’t require the employees to work and live on mining camps for a long time, which is what’s expected when working underground.
there are several different ways to mine underground. you can build spiral tunnels that circle the deposit, sink vertical shafts adjacent to the ore, or create adits, which are horizontal excavations into the side of a hill or mountain. unlike open pit, underground mining requires that you take into account a wide variety of added requirements.
the differences between underground mining and opencast mining are largely technical and financial and the relative merits are based largely on these when deciding method to deploy. sasha anderson 10/22/2018 | reply
main difference. in surface mining, the ore is accessed directly from the earth's surface, and contact is maintained with the surface throughout the operation. underground or subsurface mining is accomplished with the help of tunnels going into the earth, and
what is underground mining when the minerals are found in rich veins but in large volumes of sterile rocks, the only way to mine them is the underground mining method. these consist of opening galleries, tunnels, and other forms of mining art that allow us to take advantage in an orderly manner of the veins in their three-dimensional development.
wh n the coal is loed just below the earth's surface w us open cast mining. when coal is loed in deep below earth we have to adopt deep mining. open cast mining.only remove the top layer debris of rocks and w get coal..huge trucks can come down through slopes and remove and load, transport coal..this is cheaper and less dangerous.
in open cast miniing the earth surface is simly dug out to take minerals which are shallow.in shaft mining we should put bores to take minerals which are deep under the earth
to me as a mining engineer with many years experience in both types of mining, open cast mining means that the deposit is mined in a series of strips with the overburden from each successive strip moved or “cast” into the preceding strip. the method of moving the overburden can be varied. draglines and power shovels are common.
social costs of mining vary substantially in both underground (ug) and open cast (oc) mining, depending on many factors such as the geological position of the deposits, the technology used, the characteristics of overburden, the scale of the mining, the proximity of the villages and townships.
main difference. in surface mining, the ore is accessed directly from the earth’s surface, and contact is maintained with the surface throughout the operation. underground or subsurface mining is accomplished with the help of tunnels going into the earth, and
because opencast mining doesnt require shafts and tunnels to be built unlike other approaches such as deep mining. it is on the surface so transportation costs from underground to ground level do
in addition to the operations of the production cycle, certain auxiliary operations must be performed in many cases. underground, these usually include roof support, ventilation and air-conditioning, power supply, pumping, maintenance, lighting, communications, and delivery of compressed air, water, and supplies to the working sections.
underground mining. underground mining is generally used for areas where the mineral seam is too far underground for open cut mining to be of use. a tunnel, called a decline, is created to allow workers and machinery to reach the location of the minerals. stope mining is used for most hard rock mining of minerals such as copper, silver, lead and zinc.
solution mining for any mineral that is in or may be transported in a liquid state – oil, copper, sulpher, uranium, salt. underground mining. conventional mining: large veins or massive deposits. continuous mining: vein & bedded deposits. some examples for surface mining. open cast mining.
open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. open-pit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels. this surface mining technique is used when mineral or ore deposits are found relatively close to the surface of the earth.
balanced against this is the fact that underground only ore is mined, whereas in the open pit there are often several tons of waste stripped for each ton of ore.
underground mining: room-and-pillar mining of thick seams –“benching” different approaches allow either the top or bottom part of the seam to be mined out first.
in strip mining, the ore is extracted from the surface in layers resulting in a deepening artificial valley. this is done when the ore is relatively near the surface. in underground mining, mine shafts are bored or dug from the surface to the underground layers where the ore is located, and ore extraction takes place from those layers, and the ore is transported through the tunnels and shafts
open-pit mining, also known as mega-mining, open-cast or open cut mining, is a surface mining technique of extracting rock or minerals from the earth by their removal from an open-air pit, sometimes known as a borrow. this form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining. open-pit mines are used when deposits of commercially useful ore or
open-pit mining, also known as opencast mining, open-cut mining, and strip mining, means a process of digging out rock or minerals from the earth by their elimination from an open pit or borrow. great mining is mainly considered by mining companies product equipments like as
underground mining methods flow chart (modified from brown, 2003) note: they are differentiated by the type of wall and roof supports used, the configuration and size of production openings, and the direction in which mining operations progress. the major distinction between the different underground mining methods is whether the mined out areas remain supported after mining,
it doesn’t create the mess typically present in open-pit/surface mining. it doesn’t need breaking up and blasting the ground with explosives. underground mining is all about strategically digging holes and passages from the earth’s surface to the ore or mineral-rich areas.