Underground excavation transformation construction method for expanding excavation of new channel on basis of existing channel

The invention discloses an underground excavation transformation construction method for expanding excavation of a new channel on the basis of an existing channel. The underground excavation transformation construction method comprises the following steps that reinforcement treatment of the expandin...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LI SI, ZHANG CHENMING, LI ZHE, LIN SENBIN, ZHANG JIQING, GAO CHAO, FEI RUIZHEN, CHEN XINQIANG, SONG LEYANG, ZHANG CHUNLEI, ZENG JIALIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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