Longwall mining

Longwall mining a relatively long mining face (typically in the range 100 to 300m but may be longer) is created by driving a roadway at right angles between two />roadways that form the sides of the longwall block, with one rib of this new roadway forming the longwall face.

Once the longwall face equipment has been installed, coal can be extracted along the full length of the face in slices of a given width

This method needed support for work starting and during installation.

Longwall mining systems are capable of producing significant outputs from a single longwall face - 8 million tones per annum or more. It reduces labor cost also.

Spareage ahs developed some seals for this method of mining and they are as follows.


 
PRESSURE 300 BAR
TEMPERATURE -30℃ to +100℃
SPEED 0.5m/s
MATERIAL POLYURETHANE
 
PRESSURE 400 BAR
TEMPERATURE -30℃ to +100℃
SPEED 0.50m/s
MATERIAL NBR/PU/NYLON
 
PRESSURE
TEMPERATURE -30℃ to +100℃
SPEED 0.5m/s
MATERIAL POLYURETHANE

 

 
PRESSURE 700BAR
TEMPERATURE -30℃ to +100℃
SPEED 1.0m/s
MATERIAL NBR/PU/POM
 
PRESSURE 400BAR
TEMPERATURE -30℃ to +100℃
SPEED 0.5 m/s
MATERIAL NBR/FAB
 
PRESSURE 0.50BAR
TEMPERATURE -30℃ to +100℃
SPEED 10 m/s
MATERIAL NBR/MS

 

 
PRESSURE
TEMPERATURE -30℃ to +100℃
SPEED 0.5 m/s
MATERIAL POLYURETHANE
 
PRESSURE 0.50BAR
TEMPERATURE -30℃ to +100℃
SPEED 10m/s
MATERIAL NBR/MS
 
PRESSURE
TEMPERATURE -30℃ to +100℃
SPEED 0.5 m/s
MATERIAL NBR

 

GA-GB
PRESSURE
TEMPERATURE -50℃ to +200℃
SPEED 6.0 m/s
MATERIAL PTFE

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