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Keyword [waterproof coal pillar]
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1. Research On The Form Mechanism Of Goaf Water And Its Waterproof Coal Pillar Dimension Problem In Coal Mine
2. Research On Stability Of Overlying Strata And Reasonable Waterproof Coal Pillar With Backfilling Mining In Steep Seam Under Water Body
3. The Study On Water Inrush Through Instability Faults For Caol Minging Above Confined Aquifer
4. Study On Aquifer Parameters Of The Lowermost Cenozoic Unconsolidated Strata In The Banji Coalfield And Its Influence On Coal Mining Activites
5. Study On The Reasonable Retainning Of The Waterproof Coal Pillar Of Steep Medium & Thick Coal Seam With Hard Roof
6. Study On The Reclimaning Of Fault Waterproof Coal Pillar In Mafang Mine
7. Fluid-Solid Coupling Analysis Of The Safety Of The Waterproof Coal Pillar
8. Fluid-Solid Coupling Analysis Of The Fault Waterproof Coal Pillar
9. There Is No Key Strata Reducing Waterproof Coal Pillar Mining Under Ⅰ Classes Water Bodies
10. Feasibility Reaearch On Recovery About Boundary Waterproof Pillar In Beiyi Backfill Mining Area In Xima Mine
11. Application Of Numerical Simulation Analysis To Improving Mining Upper Boundary
12. Research On The Form Mechanism Of Left-over Areas Water And Disposal Technology
13. The Burnt Rock Feature And Retain Waterproof Coal Pillar At Yangchangwan Coal Mine Of Ningxia Province
14. Research On Reserving Coal Pillars Under Weathered Overlying Strata In Wolonghu Coal Mine
15. Experimental Study On Seepage Characteristics Of Fluid-solid Coupling Of Raw Coal And Stability Analysis Of Waterproof Coal Pillar
16. Basic Research Of Leave And Design Theory Of Adjacent And Isolated Workface Waterproof Coal Pillar
17. Prediction And Prevention Of Water Inrush Under The Unconsolidated And Confined Aquifer In Concealed Coalfields In North China
18. Fault Coal And Rock Pillars Remain Reasonable Width Provided Numerical Simulation Analysis
19. Study On The Mining Activation Mechanism And The Rational Design Of Waterproof Coal Pillar Of F6-6 Fault In Kongzhuang Mine
20. Study On The Water Resistance Of Fault Waterproof Coal Pillar And Coal Seam Floor In Deep Mining
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