METHOD FOR FORTIFYING MINE WORKINGS DRIVEN IN ROCK MATTER LIABLE TO HEAVING Russian patent published in 1999 - IPC

FIELD: mining industry. SUBSTANCE: method particularly relates to mine support units installed in horizontal and inclined development workings with heaving soft rock matter at side of floor in workings. In compliance with method, installed is main support of technologically preset profile, roof is strengthened, and performed is anchor reinforcement of heaving rock matter. In zones of opening or crossing of heaving rock matter by mine working being driven, installed in floor and/or side of mine opening are polymeric anchors with simultaneous injection of quick-hardening polymeric compound into all bore-holes altogether in compliance with adopted certificate for reinforcement. Directions of bore-holes in floor is determined with account of direction of shifting of heaving parts of mine opening contour. Application of aforesaid method makes blasting operations unnecessary, duration of technological cycle of fastening cycle is shortened, efficiency of floor fortification is enhanced, amount of quick-hardening solution needed for operation is reduced. EFFECT: higher efficiency. 2 cl, 12 dwg