Lower coal seam high-position filling mining method based on upper thin coal seam drilling type coal mining

The invention discloses a lower coal seam high-position filling mining method based on upper thin coal seam drilling type coal mining, relates to the technical field of filling mining, and is suitable for a close-range coal seam group with an upper coal seam being a thin coal seam. Green and efficie...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CHAI YUJIAN, FAN GANGWEI, ZHANG WENHUI, ZHANG DONGSHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CALCULATING COMPUTING COUNTING DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES EARTH DRILLING ELECTRIC DIGITAL DATA PROCESSING FIXED CONSTRUCTIONS MINING MINING OR QUARRYING PHYSICS SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR
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