Slotting drilling tool for shaped charge blasting of frozen soil

The invention discloses a joint-cutting drilling tool for shaped charge blasting of frozen soil. The joint-cutting drilling tool is composed of a slewing drilling machine and a joint-cutting drilling machine. The drill bit and the drill rod are connected through high-strength bolts. In the first sta...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG MINGYU, FEI HONGLU, JING GUANGJIE
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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