| 摘要 |
FIELD: mining industry, particularly for mine tunnel anchoring with steel-and-polymeric anchors. ^ SUBSTANCE: method involves drilling boreholes; inserting at least one ampoule into the borehole; driving assembled anchor into the borehole, wherein anchor includes rod, fastening nut, support ring, support and spherical washers; rotating anchor up to ampoule breaking; mixing chemical components: tightening the nut after polymerization finishing; turning fastening nut against stop by drilling rig torque applied through fitting; continuing rod rotation so that rod passes beyond the fastening nut screwed on threaded rod tail of the anchor and fixed against damage by ring installed on end of threaded rod tail. Borehole is drilled and anchor is driven with the use of the same mechanism, namely with left-handed telescopic rock drill. ^ EFFECT: reduced costs for anchor production and installation. ^ 1 dwg |
