FIELD: mining.
SUBSTANCE: anchor for coal mines includes a rod as solid body of cylindrical shape with a sharp end. The solid body of the rod is made of a material containing fine coal - coal dust - in the amount of 74.8 weight parts, bonded by phenol-formaldehyde resin of cold curing SFG-3032 in the amount of 20.6 weight parts, the curing agent in the form of 70% technical benzene-sulphonic acidaqueous solution in the amount of 4.6 weight parts. The opposite end of the anchor rod relatively to the sharp end is made with a base diameter of conical form at least equal to the diameter of the blast hole.
EFFECT: reduction of the anchors cost, the simplification of their manufacturing process, as well as improving the quality of coal, broken-up by mechanical units of winning machines.
1 dwg
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