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| Zoning assessment of coal roof water inrush(bursting)hazard of No. 3 coal seam in Libi Mine |
| Mu Jinxia |
| The First Hydrogeological Exploration Team,CNACG,Handan 056004, China |
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Abstract Aiming at the possible roof surge (sudden) water hazard of No.3 coal seam in Libi Mine, the "three maps - double prediction method" was applied to the water-richness of the direct water-filled aquifer of the roof of No.3 coal seam in the mine and the safety partition of the coal seam roof fracture, based on the coupling of AHP method of GIS. Technology superposition principle, coal seam roof gushing (sudden) water conditions comprehensive zoning map was established. Finally, the analytical method was used to predict the mine water surge.
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