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Keyword [gasdrainage]
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1. Study On Gas Migration Law And Extraction Of Lower Protective Layer Mining In Close Coal Seams
2. Research On Extracting To The Width Influence Of Goaf Area Oxidation "Three Zones" Under The Condition Of Injecting Nitrogen In Zhenghang Mine
3. Research On Mining Protecting Strata And Gas Drainage Technology Of The ShiQuan Coal Mine
4. Simulation Test And Research On "U+L+High Gas Drainage Roadway" Ventilation System Base On Test Rig Of Three-dimensional Flow Field In Goaf
5. Study On Gas Drainage Technology Through Hydraulic Flushing In Up-hole To Improve Permeability
6. Research And Application Of Gob Gas Drainage Techniques
7. Study On Integrated Control Technology Of Gas Of Fully Mechanized Caving Face In Three Soft And Lower Permeabilit Coal
8. Research On Hongmiao Coal Seam Gas Foundation Parameters And Gas Emission Law
9. The Gas Emission Rule And Control In Goaf At 50107 Working Face Of He Caogou Coal Mine
10. Study On Reasonable Position And Support Technology Of Floor Gas Drainage Roadways In Gently Inclined Coal Seams After Mining
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