Coal face water control beam

The utility model discloses a coal face water control beam comprising sticks, a bamboo sheath and steel wires. The sticks which are bent and which are uniform in length are gathered in the same direction; the sticks are wrapped with the bamboo sheath in a cylindrical shape; the outer wall of the bam...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHANG HE, CAI HANYU, JI PING'AN, ZHANG LEI, GUO LIGANG, MU LIBIN, SHI YONGFENG, LI YANFEI, LU ZHENGFA, RONG HONGYAN, LIU MINGZHAO, FENG SHENGLI, DU WENCHUN, MENG WUFENG, MIAO WEI, ZHOU KAI, LIU HAIBIN
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS MINING SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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