FIELD: mining.
SUBSTANCE: invention refers to mining industry, particularly to boring machine, consisting of perforator with bit shank, which performs boring of blast holes at driving mining excavations; here explosive cartridges are directed to face without extracting drill rod from blast hole; also bit shank, drill rod and bore bit have corresponding passages communicating with one another, while opening in bit shank is communicated with device for cartridge supply and with source of compressed medium, when cartridge is directed along above said passages to bit and to blast hole face and is initiated on face.
EFFECT: increased efficiency of operation due to reduced time for charging blast holes.
21 cl, 6 dwg
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