FIELD: drilling technique, particularly, methods and technical means for drilling of holes of various applications. SUBSTANCE: essence of the invention consists in that process of rock breakage is carried out continuously by rotating mechanical tool and high-voltage electrical pulses moving over bottom of hole to reduce rock strength. The device for realization of claimed method is proposed. EFFECT: higher efficiency of drilling. 2 cl, 4 dwg
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Authors
Dates
2001-05-27—Published
1999-04-08—Filed