Advanced grouting method for deep-buried tunnel earth surface directional drilling high-pressure sleeve valve pipe

The invention relates to a deep-buried tunnel earth surface directional drilling high-pressure sleeve valve pipe advance grouting method. The method comprises the steps that an orifice surface soil section is formed; opening a deflecting section; opening more than three horizontal grouting sections;...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	PAN JIANG, ZHANG XINGHAO, WANG HANHUI, SHI HUATANG, SONG ZHIZHONG, MIN ZHENGHUI, XIAO BI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SHAFTS TUNNELS
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