ANCHOR SUPPORT Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: in anchor support having load-bearing rod installed in bore-hole with eccentrically located supporting head on its locking end, mineral filler, backing member with eccentrically positioned washer, head has end-face part in the form of tapered cone with incline angle relative to axis of load-bearing rod being 10-15 deg. That end-face portion is provided with groove. Relation of length of tapered part to cylindrical part is equal to 1:1.8-2, and height of cylindrical part is not less than diameter of bore-hole, and clearance between cylindrical part and bore-hole wall is equal to 3.0-3.3% of bore-hole diameter. Mineral filler must be with grain size of 5-100% of clearance value. In addition, in anchor support between mineral filler and washer, eccentric flexible washer is installed. EFFECT: high efficiency. 1 cl, 1 dwg