Coal road crossover point U shaped steel abnormal shape canopy supporting device

The utility model provides a coal road intersect U shaped steel abnormal shape canopy supporting device, is including the girder steel and the steel column leg that link together, the girder steel iscombined girder steel, including establish flat -topped ridge of centre with establish two curved bea...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	GAO ZHANFENG, ZHU ZHONGPENG, LIU ZHIGANG, LIU LIKAI, SHEN JIAOLONG, GUO ZHANTONG, YU JUN, BI CUNGUANG, CHANG ERMIN, ZHAO LIANG, HAN ZHAOYAN, NIU SHIKAI, WANG DEXIANG, MENG XIANFENG, HU YANLIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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