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Keyword [extraction borehole]
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1. Study On Gas Extraction Borehole Dust Removal Technology And Device
2. Mining-induced Fracture Mechanism Of Extraction Borehole In Integrated Pillarless Coal Production And Methane Extraction
3. Seepage Characteristics Around Gas Drainage Borehole And Blockage Mechanism Of Powder
4. Study On Gas Extraction Borehole Air-Water Jet Negative-Pressure Dust Removal Technology And Device
5. Research On Creep Characteristics Of Gas Extraction Borehole In Soft Coal Seam
6. Study On The Law Of Negative Pressure Distribution For Bedding Pre Gas Extraction Borehole Under The Creep Action
7. Research And Application Of Thickened Expansion Slurry Sealing Technology For Gas Extraction Borehole
8. Study On Sealing Parameters And Sealing Material Performance Of Gas Drainage Borehole
9. Study On Sealing Control Theory And Technology Of Gas Drainage Borehole
10. Study On The Technology Of Keeping Straight And Preventing Deviation In Coal Mine Gas Extraction Drilling
11. Experimental Research On Three-Dimension Magnetic Imaging Of Sealing Slurry Flow Trace In Gas Extraction Borehole
12. Study On Three Dimensional Analysis Of Overburden Cracks In Fully Mechanized Mining Face Of Xinjing Coal Mine And The Optimum Location Of Ground L-Type Extraction Borehole
13. Experimental Study And Application Of Foam Concrete For Gas Extraction Borehole In Soft Coal Seams
14. Study On Dynamic Sealing Mucilage Material For Gas Extraction Borehole
15. Research On Novel Sealing Material For Gas Extraction Borehole Based On Microcapsule
16. Study On The Influencing Factors Of Deformation And Instability Of Deep Coal Seam Drainage Borehole
17. Stability Study Of Bedding Drainage Borehole Based On Finite Element Strength Reduction Method
18. Research On Monitoring Technology And Application Of Borehole Collapse Based On Fiber Grating
19. Application Research On Efficient Drilling Technology Based On Compound Drilling Technology
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