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Keyword [protective seam mining]
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1. Research On Evolution Of The Multiple Field And Security Pillar In Condition Of The Closed Protective Seam Mining
2. Determine The Protection Scope And Inspect The Protection Effect Of Protective Seam Mining Of The Wang Xingzhuang Coal Mine
3. Study On Pick Wear Of Coal Auger For Protective Seam Mining
4. Study On Methane Controlling Technology Of Upper Protective Seam Mining Of5132(5) Working Face Of Xieyi Coal Mine
5. Study On Protective Seam Mining And Roadway Arrangement For Coal Seams With High Gas
6. Study On The Pressure Relief Mechanism Of Upper Protective Seam Mining And Gas Extraction Technology In Close Coal Seams
7. Study On Disposed Methane Drainage Technology Of Close-distance Underlying Protective Seam Mining
8. Research On The Stress Relief And Fissure Evolution And Seepage Flow Characteristics For The Lower Protective Seam Mining With Large Interburden
9. Research On Strata Movement And Pressure-relief Gas Drainage Of Short-distance And Under-protective Steep Seam Mining
10. Study On Effect Of Outburst Prevention With Lower Protective Seam For1327Face Of Xi Ma Coal Mine
11. Research On The Relief Scope Of Influence And Eliminate Outburst Effect Of Protective Seam Mining Of The Wang Xingzhuang Coal Mine
12. Study On The Protected Range And The Law Of Gas Migration Of Upper Protective Coal Seam With Closed Distance
13. Study On Methane Controlling Technology Of Upper Protective Seam Mining Of 5121(S)B9B Working Face Of Xieyi Coal Mine
14. Research On The Overburden Strata Fissure Evolution And Pressure-relief Effect In Using Lower Protective Seam Mining
15. Study On Deformation Law Of Overlying Roadway And Supporting Technology Optimization Under The Condition Of Lower Protective Seam Mining
16. Study On Determination And Extender Technology Of Protection Range In Upper Protective Layer Mining With Closed Distance
17. Study And Application Of Digital Speckle Technique In Physical Similar Simulation Experiment Of Protective Layer Mining
18. Study On Seepage Law And Application Of Long-distance Lower Protective Seam Mining
19. Research On Technology Of Pressure Relief And Permeability Increment Caused By Nearly Whole Rock Upper Protective Seam Mining
20. Study On The Influence Of Coal Pillar On The Protected Area Under The Steep Dip Protective Seam Mining In Donglin Coal Mine
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