But empty air impact of detonation -proof hits automation that ripples destroyed air door that kick -backs

The utility model discloses a but empty air impact of detonation -proof hits automation that ripples destroyed air door that kick -backs, including the frame that upright sets up the metal in the tunnel, set up the brick wall between frame and tunnel lateral wall, set up the door leaf of the metal o...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	CHANG XINGJIAN, CHEN JIADE, REN GUOSHUN, ZHANG JIANWEI, JI XIAOFEI, WANG CHENG, YU RUIJING, PENG KANG, QIN JIJUN, CAO XUEYONG, LI CHONGJIN, ZHU GENPENG, NI GUOZHI
Format:	Patent
Sprache:	chi ; 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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