ANCHOR FROM COMPOSITE MATERIAL Russian patent published in 2013 - IPC E21D21/00 

FIELD: mining.

SUBSTANCE: anchor from a composite material comprises a load-carrying rod with periodical profile of side surface of helical shape, a facility for fixation in a borehole in the form of a wedge-spacing lock and a spacing wedge, a spacing wedge placed on it from a composite material, at the same time the spacing wedge is made in the form of a truncated cone with a central channel and a through longitudinal slot, the inner surface of the channel is made in the form of a periodical profile of helical shape, which follows the profile of the side surface of the load-carrying rod, and the spacing wedge is screwed onto the load-carrying rod, the spacing bushing is made in the form of a cylinder with a channel of conical shape, separated with two longitudinal slots into segments connected by links, and the facility of fixation with the support elements includes a support orifice with a nut, besides, the nut is made of a composite material with the thread profile corresponding to the profile of the side surface of the load-carrying rod.

EFFECT: higher reliability of anchor fixation, its increased bearing capacity, provision of the possibility to use the anchor for support of mines tunnelled in a massif of a mineral to be excavated.

3 cl, 3 dwg