Automatic negative pressure drainage device based on steeply inclined short-distance coal seam horizontal sublevel mining

The invention provides an automatic negative pressure drainage device based on steeply-inclined short-distance coal seam horizontal sublevel mining, and belongs to the field of coal seam mining. The automatic negative pressure drainage device comprises a shell, a support is fixedly arranged at the b...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SUN JUNQING, ZHAO HONGCHAO, XIA YANG, WANG LIWEI, SHAN CHENGFANG, CAO WENXIANG, WANG ZHEN, LIU HONGLIN, WANG HONGZHI, CHI MINGBO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS MINING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS SEPARATION TRANSPORTING
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