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Keyword [coal seams]
Result: 61 - 80 | Page: 4 of 10
61. Study On The Relevant Technology Of Ultral-close Thin Coal Seams Mining Under Complex Surrounding Rock Condition
62. Study On Protective Seam Mining And Roadway Arrangement For Coal Seams With High Gas
63. Research On Adsorption And Desorption Thermodynamics Of Carbon Monoxide In The Seam Of Coal Mine
64. Mechanized Mining Of Thin Coal Seams And Its Hydraulic Support Design Studies
65. Study On Goaf Flow Field Distribution Of Deeply Inclined Coal Scams With Carbon Dioxide Extinguishing By Nnmberical Simulation
66. Study On The Technology Of Surrounding Rockcontrol In Floor Roadway Under Repeated Overhead Mining
67. Surrounding Rock Control Technology And Stability Of Gob-side Entry Retaining Without Backfilling Wall Under Frequent Mining Disturbance In Close Distance Coal Seams
68. Study On The Pressure Relief Mechanism Of Upper Protective Seam Mining And Gas Extraction Technology In Close Coal Seams
69. Experimental Investigation On Methane Driving Caused By Hydraulic Fracturing In Gassy Coal Seams
70. Dangerous Region Judgment Of Spontaneous Combustion In Overlying Goaf Of Excavation In Shallow Depth Contiguous Seams Group
71. Safety Mining Technology Research Of The Ultra-close Distance And Outburst Coal Seams Based On Multi-disaster Coupling
72. Impermeability Analysis And Experimental Study About Coal Bed Floor In Workings
73. Strata Behavior Regularity Of Down Mining Face From Down To Up Of Shallow Close Distance Seam Groups In Daliuta Coa Mine
74. Study On Roof Structure And Rock Control Of Mountainous Shallow-Buried Close Multiple Coal Seams
75. Research On Distribution Of Stope Floor Rock Stress And Evolution Law Of Mining Fissure In Short-interval Thick Coal Seams
76. Research On Spontaneous Combustion Regularity Of Coal In Goaf Of Mined-out Coal Seams With Small Distance In Yaoqiao Coal Mine
77. Mechanism And Control Of Coal Bumps During Multiple Coal Seams Mining In Datong Coal Mine
78. Study On The Ground Pressure And Gas Prevention And Control In Mining Stope Of Lower Coal Seam Of Close Distance Coal Seams
79. The Study On Protective Characteristics Of Bifurcation Of Outburst Seam Mining Upper Protective Layer
80. Overlying Strata Movement Laws And Ground Control Of The Longwall Face Mining In A Shallow Depth Seam In Proximity Beneath A Room Mining Goaf
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