Advanced support device for coal mine

The invention relates to the technical field of roadway support, and provides a coal mine advanced support device which is characterized by comprising a first protective net, first beams, a second protective net and second beams, the first beams are arranged on the two sides of the first protective...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YANG JINHONG, ZHAO ZONGHUA, ZHAO HE, YAO YUANSHENG, ZHANG JUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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