METHOD FOR LOADING INCLINED WELLS Russian patent published in 2007 - IPC F42D1/08 

FIELD: mining industry, possible use during open extraction of mineral resources for processing shelves in open-cut mines and hydro-engineering.

SUBSTANCE: method for loading inclined wells with a charge having diameter lesser than that of drilled well, includes drilling of well, lowering a waterproof case made of elastic material down into the well to its face and following feeding of emulsion explosive substance into the case. Waterproof cover is made corrugated and its open end is held on loading hose of loading machine. Lowering of waterproof cover into the well is performed for whole depth together with loading hose for whole depth, the latter being extracted afterwards with a speed which matches the speed of filling of waterproof case with emulsion explosive substance. Diameter of charge placed in the waterproof case exceeds, at least twice, the critical detonation diameter d^H _cr, of emulsion explosive substance, positioned in a layer on well face, while critical detonation diameter of emulsion explosive substance in a layer, located in well face, is determined according to formula: d^H _cr=5,18+exp[-46,051+52,235ρ^H _rel], mm, where d^H _cr - critical detonation diameter of an emulsion explosive substance layer, located at depth H of the well; ρ^H _rel - relative density of emulsion explosive substance layer at depth of H meters.

EFFECT: increased productivity of drilling and explosive operations in open-cut mine.

2 cl, 1 tbl