Keyword [coal seam spacing] Result: 1 - 3 | Page: 1 of 1 1.  Study On The Influence Of Coal Seam Spacing On The Mining Pressure Behavior In Middle Abandoned Coal Seam With "Upper Longwall-lower Pillar" Residual Areas 2.  Study On Bolt Support Technology Of Coal Roadway Under Goaf In Close Seam 3.  Study On Surrounding Rock Control Technology Of Goaf Floor Roadway Under The Condition Of Close Coal Seam Spacing And Several Coal Pillars   <<First  <Prev  Next>  Last>>  Jump to

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