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Keyword [floor cross-measure boreholes]
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1. The Technology Research Of Gas Pre-drainage Through Floor Cross-measure Boreholes Of6Coal Seam In Zhangji Coal Mine
2. Simulation Experiments Study On Permeability Improvement Technology Of Presplitting Blasting Through Floor Cross-measure Boreholes
3. The Technology Research Of Gas Pre-drainage Through Floor Cross-measure Boreholes Of11-2Coal Seam In Zhangji Coal Mine
4. Research And Application Of Fracture Distribution Law Of Coal Seam Permeability Improvement Technology By Blasting Through Floor Cross-measure Boreholes
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