Hole packer for horizontal drilling of airport runway base layer

The utility model provides a hole packer for horizontal drilling of an airport runway base layer, and belongs to the field of drilling grouting sealing research. According to the utility model, the plugging piece is additionally arranged in the grouting pipe, and the threading pipe orifice is plugge...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	QUAN YIZHAO, LIU YUXING, WANG LIN, CHEN XIANG, GAO QIANG, QUAN LIXIN, CHEN CHUAN, FANG XUEDONG, CHEN JINGYU, WEI JIANG, SHI YUEYA, SHENG YUN, HUANG WEI
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
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