Natural caving method based surface collapse range control method

The invention relates to a natural caving method based surface collapse range control method. The method comprises the following steps: acquiring a conventional collapse range line, determining a controlled collapse range line, cleaning humus soil, building a water intercepting and draining ditch, c...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WU LUANDONG, SUN YANFEI, JIAN XIMING, QIU GUOZHU, GUO ZEFENG, LIU QINGFU, LIAO DEHUA, QUE CHAOYANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS MINING MINING OR QUARRYING SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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