METHOD OF DEVELOPING THICK STEEPLY DIPPING ORE BODIES Russian patent published in 2015 - IPC E21C41/22 E21F15/00 

FIELD: mining.

SUBSTANCE: method comprises sinking of working for division of the ore body on the panel, the chamber monolithic order of ore excavation in the panel, and stowing with the hardening mixture. Working of the ore body is carried out from its middle part in two directions vertically. Initially a split floor is formed with the location of the chambers in the "checkerboard" order, each second chamber is shifted by half of its height relative to the adjacent one, and the chambers are shaped as hexagon, then the upper part of the ore body from the split floor is worked out with the chambers of rectangular shape with a "checkerboard" arrangement in ascending order, and the lower part - in descending. Working of the chambers in descending order is carried out after complete stowing of coaxial chambers, worked in ascending order over the stowed chambers of the split floor. After working the ascending chambers by 1/25-1/3 of their height are stowed with hydraulic stowage, the rest - with hardening, and the descending chambers are stowed with a hardening mixture to 3/4-2/3 of their height. Stowing the voids in the roof of the stowed ascending chambers is carried out from the adjacent overlying ascending chambers as they are stowed with the hardening mixtures.

EFFECT: increased intensity of working and safety of mining operations.

2 cl, 8 dwg