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Keyword [coal seam floor]
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81. Research On Differential Control Technology Of Surrounding Rock In Extremely Close Range And Extremely Broken Roof Roadway
82. Simulation And Vulnerability Evaluation Of The Influence Of Fault On Water Inrush From Coal Seam Floor In Panjiayao Coal Mine
83. Evaluation Of Water Inrush Hazard Of Coal Seam Floor In Ultra-thin Aquiclude Area Of Qianbei Coalfiel
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