Drivage in coal seam prone to outburst

High Outburst Coal Seam

low permeability outburst coal seam

Outburst Coal Seam

upgrade of non-outburst coal seam

Coal Outburst

exposing coal seam to prevent gas outburst

gas and coal outburst

gas control and coal outburst prevention

OUTBURST COAL

outburst coal briquette

outburst coal layer

Outburst Seam

rock or coal outburst

coal-prone gas source

11-2 Coal Seam

6 coal seam

abnormal coal seam thickness

accumulated total coal seam thickness