coal mine ventilation
Post on 25-Feb-2016
161 Views
Preview:
DESCRIPTION
TRANSCRIPT
Coal Mine Ventilation
Ventilating The Face Area
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.
The Ventilation Current
• The Body of Air which is moved through a mine.
• Intake and Return
Ventilating Pressure
• Air, like any fluid body, will always move from a point of High Pressure to a point of Low Pressure.
Diagram of Main Fan at a Shaft
Fan Impeller
Automatic DoorsExplosion Dooror Weak Wall
15'
Mine Entry
OverburdenShaft
DIRECTION OF AIRFLOW
INTAKE AIR
DIRECTION OF AIRFLOW
RETURN AIR
PERMANENT STOPPING
TEMPORARY STOPPING
CHECK CURTAIN
LINE CURTAIN
OVERCAST
UnderIntake Air
Over Return Air
REGULATOR
C C C
R R
Longwall Ventilation
c c c
R
R R
R R
R
R R R
R
Multi-Section Ventilation
R
R
c c c c
R
cR
c
R
c cc
END
top related