Big pipe diameter divides storehouse excavation artifical push pipe

The utility model provides a big pipe diameter divides storehouse excavation artifical push pipe, the push pipe includes instrument pipe and cement pipe, instrument pipe is including the sword foot section and the section of rectifying, the inner space of sword foot section is separated by the baffl...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SUN JINGWEI, ZHAO YANWEI, JIANG LIPING, GENG WEIHONG, LI SHUANGFEI, SUN XIUYUN, CAO CHENGWEI, LIU QI, GAO HE, XIAO ZONGLI, LI HUIYONG, GUO NAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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