Difference between revisions of "Pillar design"

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|Room and Pillars
 
|Room and Pillars
|Pillars are left in place in a predetermined and calculated pattern as rooms are mined out.
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|Pillars are left in place in a predetermined
  +
and calculated pattern as rooms are mined out.
 
|-
 
|-
 
|Yield Pillars
 
|Yield Pillars
|Pillars are designed to fail by going past peak load carrying capacity. Roof-strata is maintained by relieving pressure in working areas and controlling transference of load to abutments that are clear of working areas and road ways. Yielded pillars still carry load.
 
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|Pillars are designed to fail by going past
  +
peak load carrying capacity. Roof-strata is
  +
maintained by relieving pressure in working
  +
areas and controlling transference of load
  +
to abutments that are clear of working areas
  +
and road ways. Yielded pillars still carry load.
 
|-
 
|-
 
|Post Pillars
 
|Post Pillars
|Room and pillar variation where ore is mined out in a series of horizontal slices.
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|Room and pillar variation where ore is mined
  +
out in a series of horizontal slices.
 
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|-
 
|Barrier Pillars
 
|Barrier Pillars
|Solid blocks left between two mines or sections of a mine. Provides regional support in large mines to prevent accidents due to inrushes of water, gas, or explosions or a mine fire.
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|Solid blocks left between two mines or sections
  +
of a mine. Provides regional support in large
  +
mines to prevent accidents due to inrushes
  +
of water, gas, or explosions or a mine fire.
 
|-
 
|-
 
|Bracket Pillars
 
|Bracket Pillars
|Slip on discontinuities may cause rockburst within stopes, which can cause equipment damage and injury or loss of life. Ore immediately adjacent to these geological structures is left unmined to protect the structure from mining induced stresses.
 
  +
|Slip on discontinuities may cause rockburst
  +
within stopes, which can cause equipment damage
  +
and injury or loss of life. Ore immediately
  +
adjacent to these geological structures is
  +
left unmined to protect the structure from
  +
mining induced stresses.
 
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Revision as of 14:18, 4 February 2015

==1.0 Classification of Pillars== ===1.1 Support Pillars===

Support pillars are load carrying. Examples of support pillars include:

Type of Pillar Description
Sill Pillar Horizontal pillars that separate levels or stopes,

often used when multiple levels are mined concurrently.

Room and Pillars Pillars are left in place in a predetermined

and calculated pattern as rooms are mined out.

Yield Pillars Pillars are designed to fail by going past

peak load carrying capacity. Roof-strata is maintained by relieving pressure in working areas and controlling transference of load to abutments that are clear of working areas and road ways. Yielded pillars still carry load.

Post Pillars Room and pillar variation where ore is mined

out in a series of horizontal slices.

Barrier Pillars Solid blocks left between two mines or sections

of a mine. Provides regional support in large mines to prevent accidents due to inrushes of water, gas, or explosions or a mine fire.

Bracket Pillars Slip on discontinuities may cause rockburst

within stopes, which can cause equipment damage

and injury or loss of life.  Ore immediately 

adjacent to these geological structures is left unmined to protect the structure from mining induced stresses.


Please add a link to this page in the article that already exists on room and pillar mining.