FIELD: construction.
SUBSTANCE: self-drilling anchor bolt comprises a hollow rod of a helical profile (12), a setting end (26) and an opposite drilling end (28). The angle of anchor rod threading profile is between 30° and 60°. At the same time the setting end has a setting thread (27) to ensure engagement of the anchor bolt with the drilling device, and the drilling end comprises a fastening thread (24) to install an anchor device (25). Besides, setting and fastening threads have a pitch, profile and/or direction differing from the pitch, profile and direction of the anchor rod helical profile.
EFFECT: higher reliability of anchor fixation in a blast hole.
16 cl, 5 dwg
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