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Keyword [soft coal seam]
Result: 61 - 80 | Page: 4 of 5
61. A Model For Hydraulic Fracturing In Soft Coal Seams By Elastic–plastic Softening Damage
62. Research On Key Technology Of Tunnel Drilling Rig In Soft Coal Seam
63. Research On Technology Of Drilling Tools And Hole Formation In Soft Coal Seam
64. Study On The Size Of Yield Pillar And Technique Of Surrounding Rock Control In Guocun Coal Mine
65. Study On The Instability Mechanism Of The Sealing Section Of The Borehole In Soft Coal Seam And The New Reinforced Seal Technology
66. Research On Key Technology Of Foam Drilling In Underground Broken Soft Coal Seam
67. Study On The Surrounding Rock Control Technology Of "Three Soft" Coal Seam Drifting Along Gob In Zhaojiazhai Coal Mine
68. Study On The Overlying Strata Movement Law And Control Technology Of "Three Soft" Coal Seam Up-dip Working Face
69. Study On The Bearing Law And Adaptability Of Hydraulic Support In Three-soft Coal Seam With Large Mining Height
70. Study On Law Of Fracture Development Around Borehole In Soft Coal Seam
71. Study On Influence Factors Of Fracture Proppants Conductivity In Soft Coal Seam
72. Research On Mechanism Of Outburst Soft Coal Seam And Water Injection Strengthened By Loosening Blasting Technology
73. Study On New Sealing Technology And Reasonable Parameters For Gas Drainage Borehole In Soft Coal Seam
74. Research On The Technique Of Guiding Gob-side Entry Formed By Advanced Roof Caving With Weaking Bore In Three-soft Coal Seam
75. Study On The Gas Solid Extraction Technology Of Soft Coal Seam In Xiangshan Mine
76. Research On Support Technology Of Large Cross Section Coal Seam Roadway Along Roof And Floor
77. Research On Asymmetric Deformation Mechanism And Control Technology Of Roadway In Inclined Soft Coal Seam
78. Study On Support Technology Of Right Angle Trapezoidal Roadway In Slowly Inclined Soft Coal Seam
79. Study On Gas Pre-extraction Technology For Large Diameter And Long Borehole In Xinyuan Mine
80. Experimental Research On Anti-collapse Support Device For Borehole Mining In Soft Coal Seam
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