News Center
  1. Home
  2. coal room and pilhar

Coal Room And Pilhar

coal mining world coal association,in room-and-pillar mining, coal deposits are mined by cutting a network of rooms into the coal seam and leaving behind pillars of coal to support the roof of the mine. these pillars can be up to 40 of the total coal in the seam although this coal can sometimes be recovered at a later stage..risk assessment and control strategy of residual coal,gradual instability of coal pillars left behind underground with room mining is one of the main reasons for sudden roof caving in the gob, surface subsidence, and other significant hazards. moreover, room mining implies great losses of coal resources. in this paper, the main failure mode and room mining coal pillar process were analyzed according to the coalfield regional engineering.

Last New

Our products sell well all over the world.

GET A QUOTE

Note: If you're interested in the product, please submit your requirements and contacts and then we will contact you in two days. We promise that all your informations won't be leaked to anyone.

I accept the Data Protection Declaration