Coal Mine Ventilation

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Coal Mine Ventilation

• Ventilating The Face Area

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Purpose of Ventilation

• Dilute, render harmless and carry off
  accumulations of dangerous gasses and dust from
  the mines.
• Supply fresh or uncontaminated air to persons
  working in the mine.

3
The Ventilation Current

• The Body of Air which is moved through a mine.
• Intake and Return

4
Ventilating Pressure

• Air, like any fluid body, will always move from a
  point of High Pressure to a point of Low Pressure.

5
Diagram of Main Fan at a Shaft
Automatic Doors
Explosion Door or Weak Wall
Fan Impeller
15'
Overburden
Shaft
Mine Entry
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DIRECTION OF AIRFLOW
INTAKE AIR
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DIRECTION OF AIRFLOW
RETURN AIR
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PERMANENT STOPPING
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TEMPORARY STOPPING
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CHECK CURTAIN
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LINE CURTAIN
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OVERCAST
Over Return Air
Under Intake Air
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REGULATOR
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C
C
C
R
R
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Longwall Ventilation
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R
R
R
c
c
c
R
R

R
R

R
R
R
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Multi-Section Ventilation
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c
c
c
R
R
R
R
c
R
c
c
c
c
c
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END