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Keyword [Thick and hard coal seam]
Result: 1 - 4 | Page: 1 of 1
1.
Law And Control Of Rockburst In Coal Pillar Under The Condition Of Special Thick And Hard Coal Seam In Hujiahe Coal Mine
2.
Relationship Of Structural Coupling Between Hydraulic Roof Supports And Surrounding Rock In Extra-thick And Hard Coal Seam With Super-large Mining Height And Longwall Top Coal Caving Method
3.
Study On The Impact Mechanism And Prevention Technology Of Mining With Layered Caving In Extra Thick And Hard Coal Seam
4.
Research And Application Of Top Coal Pre-cracking Technology In Fully Mechanized Top Coal Caving Mining And Hard Coal Seam
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