Method for arranging advanced water exploration and drainage holes of water-rich soft-rock rapid tunneling roadway

The invention discloses a method for arranging advanced water exploration and drainage holes of a water-rich soft-rock rapid tunneling roadway. The method comprises the following steps of constructing a group of advanced water exploration and drainage holes every 50 m from a position of being 20 m a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU SHENGJIAN, HAN GANG, LYU YUGUANG, ZHANG WENYU, HE XIAOQING, WANG NA, DING XUEXIAN, ZHENG HUAIYOU, LI PENG, WANG YONGBAO, GUAN YANTAI, LI JUNCHUN, SHI TAOTAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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