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Keyword [Overlying rock fissure]
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1. Research And Application Of Comprehensive Gas Drainage Technology In Fully Mechanized Top Coal Caving Face Of Extra Thick Coal Seam In Xia Gou Mine
2. Study On Gas Emission Law And Extraction Technology Of Fully Mechanized Caving Face In Tashan Mine
3. Overlying Rock Fissure Development And Porosity Distribution In Shallow Buried
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