Keyword [Hard Top-coal] Result: 1 - 8 | Page: 1 of 1 1.  Basic Study On Technology Of Pre-blast Weakening Hard Top-coal In Fully Mechanized Caving Faces 2.  Application Study On Pre-Weakening Hard Top-coal In Fully Mechanized Caving Of No.1 Honghui Coal Mines 3.  The Study Of Soften Property Of Hydraulic Fracturing Hard Top-coal 4.  The Water Softening Technology Research On The Horizontal Section Comprehensive Mechanized Top-coal Cavingin Steep Seam 5.  Study On The Pressure Behavior Of "Two Soft And One Hard" Top Coal Caving In Unstable Coal Seam Face And Control Technology 6.  The Study On Ultrasonic Experiment Of Unsaturated Coal Samples Of Water Immersion Softening 7.  Research On Weakening Technology Of Top-coal Caving Mining Of Tun Bao Mine 8.  Study On The Breaking And Caving Rules Of Thick And Hard Top Coal And Cracking Promotion In Shenshupan Coal Mine   <<First  <Prev  Next>  Last>>  Jump to

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