| 摘要 |
FIELD: mining. ^ SUBSTANCE: method consists in excavation of mineral along strike with inclined layers, in forming hauling and filling-airway entries, in blast-hole drilling breakage of ore and layer-by-layer backfilling of worked-out space. Breakage of ore is performed with inclined oriented boreholes which are bored from an airway entry, where their inclined bores are arranged at an angle equal to the angle of a natural slope of loose backfilling, which is bigger, than the angle of natural slope of broken ore. Bore charging is performed to the point of cut of the inclined bore, while backfilling of the block is carried out along an up-hole; an elastic continuous shell is installed in it at the level of a backfilled layer. The elastic continuous shell is arranged at the level of the backfilling layer in a neighbour up-hole. After laying loose backfilling fast hardening solution is poured over it; after that the cycles are repeated. A shape of elastic continuous shells is accepted as close to cross-section of up-holes. The elastic continuous shells are made out of rubber-cord. ^ EFFECT: reduction of backfilling material cost, increased efficiency of block during stoping and safety of operations performed in block. ^ 3 cl, 1 dwg |
