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Keyword [gas pre-drainage]
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1. Laboratory And Numerical Test Studies Of Gas Pre-drainage With Dense Boreholes In Outburst Coal Seam
2. Study On Outburst Elimination Technique In Low Permeability Coalbed Using Zonal Gas Pre-drainage By Cross-measure Boreholes
3. Effect Analysis And Evaluation Of Up-hole And Down-hole Butt Joint Gas Pre-drainage Technology In Shaqu Coal Mine
4. The Technology Research Of Gas Pre-drainage Through Floor Cross-measure Boreholes Of6Coal Seam In Zhangji Coal Mine
5. The Technology Research Of Gas Pre-drainage Through Cut Hole Drilling In Li Zuizi Coal Mine
6. The Technology Research For Cross Bottom-Board Borehole And Striped Gas Pre-drainage In LiZuiZi Coal Mine
7. Research On Regional Outburst Elimination Technology By Gas Pre-drainage Strengthen By Hydronic Flushing In Hole
8. The Technology Research Of Gas Pre-drainage Through Floor Cross-measure Boreholes Of11-2Coal Seam In Zhangji Coal Mine
9. Study On The Technology Of Gas Pre Drainage Area In The Long Hole Of The Long Length Of The Coal Mine
10. Research And Application Of Gas Drainage Technology For High Gas Coal Face
11. Coal Permeability Anisotropy And Its Effects On Gas Pre-drainage Of Coal Seam
12. Research On Strengthening Gas Pre-drainage Effect With The Fracturing Technique By Liquid CO2 Phase Transition In Layer Through Boring
13. Simulation Of Seepage Laws Of Gas Drainage From Drill Hole Along Coal Seam Based On Adsorption Effect
14. Research On Gas Pre-drainage Test By Boreholes In 6-2 Seam In Gubei Mine
15. Optimization Research Of Gas Pre-drainage Parameters In Jiangjiahe Mine
16. Study On The Drilling Distance And Negative Pressure Of 2601 Working Face Gas Pre-drainage In Zhangcun Coal Mine
17. Application Research Of Gas Pre-drainage Technology By Hydraulic Fracturing Permeability Improvement In Mapu Coal Mine
18. Research On CO2 Fracturing Enhanced Gas Pre-drainage Technology For Drilling Along Bedding In Low-permeability Outburst Coal Seams
19. Research On Three-dimensional Comprehensive Gas Pre-drainage Technology And Application In Huangling Mining Area
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