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Keyword [upper protective]
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1. Pressure Relief Functional Principle Of Stope Underlying Coal-Rock Mass And Application In Gas Extraction Of Protected Coal Seam
2. Study On Key Issues Existed In Exploiting Steep-Incline Upper-Protective Multi-Layer With A Bow Pseudo-Incline Technique
3. Cooperative Control Of Gas Disaster During Mining Of Thin And Short Distance Upper Protective Coal Seam In Deep Coal Mine
4. Investigation On Protection Scope Demarcation Of Upper Protective Layer Using Pitching Oblique Mining Method
5. Investigation On Protection Range In Exploiting The Upper-protective Layer Of Inclined Coal Seems
6. Study On The Released Range And The Critical Interlayer Spacing Of Upper Protective Coal Seam With Closed Distance
7. Study On Released Range And Gas Drainage Of Close Lean Upper Protective Layer
8. Study On Methane Controlling Technology Of Upper Protective Seam Mining Of5132(5) Working Face Of Xieyi Coal Mine
9. Study On The Technology Of Pingdingshan Twelve Mine Upper Protective Coal Seam Exploitation
10. Study On The Mechanism And Application Of Pressure Relief Of Thin Coal Seam Mining As Upper Protective Seam In High Gas Coal Seams
11. Study On The Pressure-relief Gas Extraction Technique Under The Conditions Of Protective Layer Mining
12. Study On Gas Migration For Extreme Close Range Upper Protective Coal Seam Exploitation In No.5 Mine, Pingdingshan
13. Study On The Pressure Relief Mechanism Of Upper Protective Seam Mining And Gas Extraction Technology In Close Coal Seams
14. Study On Deformation Law Of Coal-rock Mass And The Pressure-relief Gas Extraction Technique Under Upper Protective Layer Mining
15. Investigation On Protection Range And The Gas Migration Law In Upper Protective Layer Mining Of Tuzhu Mine
16. Investigation On Protection Range In Exploiting The Upper-protective Coal Seam Under The Igneous Rock
17. Experiment Of Coal Containing Gas Under The Condition Of Unloading Confining Pressure Research On Relief Scope Of Upper Protective Seammininig
18. The Study On Protective Characteristics Of Bifurcation Of Outburst Seam Mining Upper Protective Layer
19. Theory Of Coal And Gas Outburst Prevention During Mining And Key Technology Research In Upper Cover Of Hongling Coal Mine
20. Study On The Effect Of Pressure Relief On Floor Fracture And Gas Control After The Stagger Arrangement
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