Medium And Deep Hole Room And Pillar Mining Method

Development of a Methodology for Analysis of Instability

Green River Wyoming US (Figure 1) The mines employ a typical room and pillar mining method utilising continuous and bore miners to extract a 3 m seam of trona at a depth of approximately 490 m below ground surface Longwall mining is also employed at the FMC mine and has recently been initiated at the Solvay mine

Get Price

7 Different Types of Mining Processes

12/03/2020· 6 Room & pillar mining The title given to room and pillar mining is very fitting as it is an underground method of clearing out coal by creating roomlike spaces Some material is left in pillars which helps to support the roof so that ore around it can be removed

Get Price

7 Different Types of Mining Processes

12/03/2020· 6 Room & pillar mining The title given to room and pillar mining is very fitting as it is an underground method of clearing out coal by creating roomlike spaces Some material is left in pillars which helps to support the roof so that ore around it can be removed

Get Price

What Are the Different Types of

07/08/2013· Room and Pillar Mining Room and pillar mining has been used in the United States longer than any other underground method Mining is accomplished by driving entries off the panel entries As mining advances rooms are excavated in the coal seam the strata above the seam are supported by pillars of coal left in place

Get Price

Underground Mining Methods Mining Matters

Underground Mining Methods you watch the animations take note of the following Mining Method Room and Pillar (a)heavy equipment and machinery (b)location of where the operation begins (c)presence of tunnels (d)the direction of the tunnels (e)explosives and blasting Mining Method Sublevel Stoping (a)heavy equipment and machinery

Get Price

Underground Mining Methods and Equipment

Room and pillar Mining Room and pillar mining is suitable for flat or nearly horizontal tabular deposits If the ore bodies are moderately inclined (>30°) it is impractical to utilize tired mobile equipment resulting in reduced productivity If the competence of the hanging wall and/or the ore is

Get Price

How can mining create a sinkhole? Socratic

07/03/2016· Underground coal and potash mines that were not too deep can sometimes produce sink holes in the overlying ground Mines that use "room and pillar" mining methods are susceptible to the collapse of the overlying strata which then causes a sinkhole at the surface The eastern coal states are prone to this kind of collapse and you can even buy insurance against this happening!

Get Price

Mining Engineering Quiz Mining Engineering

B Room and pillar method C Post and pillar method D All the above View Answer Answer All the above 5 Long wall method is A Generally applicable to thin coal seams B Applied to deep mining C Applicable to thick coal seams D Applied to very deep mining and lt is a underground mining method used for small rich ore bodies 9 Strip

Get Price

Room and Pillar Mining Method

Practical importance of the Room and pillars method Different applications of the R & P method R & P in hard rocks Conditions of deposit for application of

Get Price

Underground Mining Methods UFRGS

Post Room and Pillar Mining Post room and pillar mining (or "post pillar" mining) is a combination of room and pillar and cut and fill stoping With this method ore is recovered in horizontal slices starting from the bottom and advancing upward Pillars are left inside the stope to support the roof

Get Price

Mining Methods Longwall Horizon and

Apart from the commonly practiced "bord and pillar" method of mining followed in this country the other methods of mining adopted in some collieries are 1 Longwall Mining Method 2 Horizon Mining 3 Level Mining or Semi Horizon Mining Room and pillar method of mining is not practiced in any of the collieries in India though it is the

Get Price

Mining method (Patent)

A deep level mining method is claimed wherein conventional mining takes place to recover ore and pillars are left for support purposes The ore in the pillars is recovered before or after their formation by drilling overlapping holes into the reef in the pillars The holes are plugged thereafter to restore the supporting function of the pillars

Get Price

Mining method (Patent)

A deep level mining method is claimed wherein conventional mining takes place to recover ore and pillars are left for support purposes The ore in the pillars is recovered before or after their formation by drilling overlapping holes into the reef in the pillars The holes are plugged thereafter to restore the supporting function of the pillars

Get Price

Room and Pillar Mining Method

Practical importance of the Room and pillars method Different applications of the R & P method R & P in hard rocks Conditions of deposit for application of

Get Price

7 Different Types of Mining Processes

12/03/2020· 6 Room & pillar mining The title given to room and pillar mining is very fitting as it is an underground method of clearing out coal by creating roomlike spaces Some material is left in pillars which helps to support the roof so that ore around it can be removed

Get Price

Common Types of Mining Equipment Used in

25/03/2021· Retreat mining This type follows room and pillar mining until mining completes in the room This method removes the pillars for their ore content to maximize material recovery Blast mining Blast mining uses explosives to loosen rocks and open mining spaces especially to remove hard rock from both underground or surface mines

Get Price

How can mining create a sinkhole? Socratic

07/03/2016· Underground coal and potash mines that were not too deep can sometimes produce sink holes in the overlying ground Mines that use "room and pillar" mining methods are susceptible to the collapse of the overlying strata which then causes a sinkhole at the surface The eastern coal states are prone to this kind of collapse and you can even buy insurance against this happening!

Get Price

Commonly used mining techniques to

25/01/2018· The underground mining includes six type of mining methods that include longwall mining continuous mining room and pillar mining blast mining shortwall mining and retreat mining In room and pillar mining coal deposits are mined by creating a network of rooms into the coal seam Pillars of coal are left at the site to support the roof

Get Price

Types of Mining Methods Sell Side Handbook

11/03/2018· Room and Pillar Mining Room and pillar mining is a method that is usually used for lower grade ore bodies that are relatively horizontal with dip size of less than 30 degrees and thickness of no more than 30 metres While this method is highly productive it is feasible only when the ore footwall and hanging wall are of good quality

Get Price

Types of Mining Methods Sell Side Handbook

11/03/2018· Room and Pillar Mining Room and pillar mining is a method that is usually used for lower grade ore bodies that are relatively horizontal with dip size of less than 30 degrees and thickness of no more than 30 metres While this method is highly productive it is feasible only when the ore footwall and hanging wall are of good quality

Get Price