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Keyword [Close Coal Seam]
Result: 41 - 49 | Page: 3 of 3
41. Study On Movement And Failure Law Of Overburden In Upward Mining Of Short Distance Coal Seam
42. Deformation And Instability Law Of Roadway Surrounding Rock Under Coal Pillar In Goaf And Roadway Support Technology
43. Study On Gas Treatment Technology Of Upper Protective Layer Working Face Of Close Coal Seam Group
44. Study On The Characteristics Of Overlying Coal(rock)seam Collapse And Gas Transport Pattern Of Near Coal Seam Group Mining In Pengcheng Coal Mine
45. Study Of The Oxygen Depletion Characteristics Of Working Faces In Shallow Buried Close Coal Seam Groups
46. Study On Prevention And Control Technology Of Toxic And Harmful Gases In Overlying Goaf Of Close Coal Seam Group
47. Study On Cooperative Control Of Goaf Retaining In Gently Inclined Close Coal Seam Group
48. Research On The Evolution Law Of Surrounding Rock Cracks In The Protected Layer Mining Tunnel During Close-range Coal Seam Group Minin
49. Research On The Gas Migration Law Of Pressure Relief In Close-range Coal Seam Mining And Precise Extraction By Directional Long Drillin
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