METHOD OF INSTALLING ROD-TYPE ANCHORS FIXED BY QUICK-HARDENING COMPOUNDS Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: method relates to anchor support for underground workings fixed in holes by chemical quick-hardening compounds. Anchor rod is inserted into hole. Components of chemical compound are delivered through separate passages. Installed in hole head is hermetizer with valve for insertion of injector and pipe for evacuation of air. Air is expelled by filling hole with fixing compound in amount equal to difference of hole volume and volume of anchor introduced into hole. Then injector is removed and end portion of anchor is inserted through hermetizer valve, valve is thus opened and anchor is further moved in together with hermetizer along hole until anchor rests against hole bottom. EFFECT: high efficiency. 6 dwg