opencast mining method process in coal

The openpit or open cast mining method is the obvious choice for a property with wide area of mineralization exposed or exists close to the surface and continues to greater depth The open pit is opening the orebody from the surface by separate removal of ore and associated waste rocks

Openpit 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 Openpits are sometimes called ‘quarries’ when they produce building materials and dimension stone Benefits of openpit

The Mining Process When coal seams are near the surface it may be economical to extract the coal using opencast mining methods which recover a greater proportion of

extraction of deeper coal seams whereas opencast method is suitable for shallow coal seams However due to less production cost mechanisation and

ADVERTISEMENTS List of equipment used in opencast coal mining are 1 Bulldozer 2 Craper 3 Ripper 4 Tractor Shovel 5 Dipper Shovel 6 Stripper Shovel 7 Pull Shovel or Hoe 8 Dumpers or Tippers 9 Drag Line 10 Road Grader 11 Rock Drills Opencast mining is the oldest method of excavating minerals but the mining

The mining method selected for exploitation is determined mainly by the characteristics of the coal deposit and the limits imposed by safety technology environmental concerns and economics

Open pit mines can be used in coal mining and they are used extensively in hard rock mining for ores such as metal ores copper gold iron aluminum and many minerals In a open pit coal mine the pit bottom would be the bottom mined coal seam elevation since it is usually feasible to extract multiple seams when surface mining coal

In openpit mining of the coal seam several benches are established in both the overburden strata and the coal seam The openpit method is generally practiced where thick coal seams are overlain by thick or thin overburden it is also used for mining steeply pitching coal seams In the beginning stages of mining considerable volumes of overburden materials must be accumulated in

In the previous topic we saw that blasting is the mining operation used to break the rock mass in order to facilitate the removal of the overburden We saw that some of the main equipment used to remove the overburden are truck lines trucking shovels excavators In this topic we will look at some of the characteristics of these excavation metals and at which deposits they are more suited

In India coal seams with inclination as steep as 1 in 3 have been worked by mechanised opencast mining methods in Karanpura field Seams at shallow depths which are actively gassy liable to spontaneous heating or with bad roof should preferably be extracted by quarrying as the mining legislation for underground working of such seams is stringent

As mentioned surface mining or opencast coal mining is the predominant method used in Australia and so is focused on within this pa per Opencast coal mining on a large scale first commenced in

The Mining Process When coal seams are near the surface it may be economical to extract the coal using opencast mining methods which recover a greater proportion of the coal deposit than underground methods Geology and Planning

Coal Production from opencast mines in India FY 199899 to 201617 Source Coal Directory of India FY 199899 to 201617 Output Per Man Shift OMS of UG and OC mining methods under CIL

Case Study Of Open Cast Mining In India Ppt Are Opencast Coal Mines Casting A Shadow On The Indian Prasad 2001 Currently in India opencast OC mining is the predominant method for mining coal The share of OC mining in Indian coal production was 80 per cent in the year 2000–01 GOI Get Details READ MORE

PreFeasibility Report For Proposed Gidhmuri Paturia Coal Method of mining Opencast mining by shoveldumper 11 Ultimate depth 130 m bgl 12 Maximum production capacity 56 MTPA 13 Expected life of mine 30 years 14 Working hours 3 shift per day of 8 hrs in 330 days The total coal reserves by open cast coal mining Chat Online Mining

Coal Mining Methods Underground Mining Longwall Room and Pillar Mining Longwall mining and roomandpillar mining are the two basic methods of mining coal underground with roomandpillar being the traditional method in the United States Both methods are well suited to extracting the relatively flat coalbeds or coal seams typical of

Open pit mines can be used in coal mining and they are used extensively in hard rock mining for ores such as metal ores copper gold iron aluminum and many minerals In a open pit coal mine the pit bottom would be the bottom mined coal seam elevation since it is usually feasible to extract multiple seams when surface mining coal

Coal mining Coal mining Choosing a mining method The various methods of mining a coal seam can be classified under two headings surface mining and underground mining Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods and the choice of which method to use in extracting a coal seam depends on many

sampling methods Chapters 3 4 and 5 focus on dust control technologies for longwall mining continuous mining and surface mining respectively Finally it must be stressed that after control technologies are implemented the ultimate success of ongoing protection for workers depends on continued maintenance of these controls

The process of Coal mining has developed over the years and different methods have been evolved to extract the mineral which is available in different terrains across the world The most economical method of extracting coal depends upon the depth and the quality of the coal seams Coals are mined both from surface and underground

UNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol II Surface Mining Methods and Equipment J Yamatomi and S Okubo ©Encyclopedia of Life Support Systems EOLSS Figure 2 Change in production and productivity of US coal mines The higher productivity for open pit mining equipment also lowers costs

Dec 05 2008 · PlotMaker Mining Methods Blackout day presentation 5 th December 2008 VENKAT M Team Lead – Minex INDIA

Although the United States has the vast coal resource described in the previous chapter perhaps as much as 4 trillion tons the key issue for policy makers is the amount of coal that is economically is not a fixed quantity but depends on the geological resource the market price and the cost of mining The particular characteristics of the coal mining industry create unique