METHOD FOR DEVELOPMENT OF GENTLY SLOPING AND INCLINED BUMP HAZARDOUS ORE DEPOSITS Russian patent published in 2020 - IPC E21C41/22 

FIELD: mining.

SUBSTANCE: invention relates to mining, namely to underground development of gently sloping and inclined deposits of minerals, and can be used for development of impact-hazardous and structurally disturbed sections of rock mass. Method of development includes development of deposit by panels with extraction of ore by chamber-sections with end discharge of broken ore through panel borehole-bearing workings with orientation of common line of front of clearing works along direction of maximum main stresses. Method also includes formation of filling massif by feeding hardening mixture into mined space and ore breaking in clamped medium to backfill massif. Drill-and-supply have a slope of not more than 8 degrees. Advance of mining operations in upper panels above lower panels is at least two chamber-sections. At that value of linear movement of packed stowage mass is determined by formula: l=L_max(p_n-p_k)/p_n, m, where l is the linear displacement value – compensation formed by sealing body packing, m; L_max is thickness of filling mass layer, m; p_n and p_k – initial and final factors of loosening of filling massif.

EFFECT: invention allows improving development efficiency of ore deposits, improving quality of ore mass crushing.

1 cl, 2 dwg