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Keyword [roof disaster]
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1. Basic Study On Technology Of Pre-blast Weakening Hard Top-coal In Fully Mechanized Caving Faces
2. Study On Safety Control To Mining Under Large Scale Hidden Trouble Zone
3. Study On Roof Disaster Pre-warning Of Large Ming Height And Super-long Working Face
4. Research On The Roof Disaster And Its Control Technique During Full Zone Mining In Ultra Close Coal Seams By Similar Simulation
5. Study On Roof Disaster-causing Mechanism And Control Technology Of Gob-side Entry Retaining In Deep Coal Mine
6. Research On Roof Disaster Monitoring Technology In Heavy Steep-thick Coal Seam Mining
7. Research On The Mechanism And Prevention And Control Of Coal Column Induced Active Load Ore In Room Collection
8. Study On The Coal Mine Roof Safety Risk Identification And Control Management
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