ANCHOR Russian patent published in 2009 - IPC E21D21/00 

FIELD: mining.

SUBSTANCE: invention is related to mining and may be used for anchor reinforcement of mine tunnels. Anchor consists of weight-bearing rod with support head eccentrically arranged near well bottom. Bush of loose material, pore space of which is filled with elastic binder, is eccentrically installed on weight-bearing rod. Bush has external protrusions arranged prior anchor installation with dimensional size that exceeds well diametre, at the same time ends of retaining elements are installed into protrusions. External protrusions of bush may be made of loose material with elastic binder of particles or from elastic binder of particles. Volume of bush external protrusions exceeds diametre of well before installation of anchor, not more than volume of indents. Structure also comprises standard support elements and nut outside well.

EFFECT: invention makes it possible to increase reliability of anchor operation with its relatively low cost.

4 cl, 7 dwg