Excavation construction method for subsurface tunnel in discontinuous lithologic stratum

The invention provides an excavation construction method for a subsurface tunnel in discontinuous lithologic stratums, which comprises the following steps: step 1, when lithologic grades of upper and lower stratums of the same section are different during construction, completing advance support, an...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YANG GUANG, ZHOU HENG, LIN CHEN, SUN TONGLI, LIU KEXIANG, HUANG FEI, SUN ANSHI, WEN YANAN, DU WEI, ZHU DONGYUAN, LIU YI, ZHANG JUHUA, YIN JIYING, ZHANG YU, CAO ZHENG, FANG ZHONGQIANG, HE LIXIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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