DEVELOPMENT OF THICK GENTLY SLOPING POTASSIUM BEDS Russian patent published in 2016 - IPC E21C41/20 

FIELD: mining.

SUBSTANCE: invention can be used in development of potassium deposits. Development method involves delineation of extraction block development drifts, deposit unit chambers with leaving of inter-chamber yielding pillars, driving of preparatory drift fork boards production machine check-out starting from bottom layer cuts Sylvinite. Development is performed in layers, cut Sylvinite output on surface, and spent halite is used as filling material. As the first layer of bore pits are drilled over the layer of salt, then along length of chambers are perforated pipes. After development of lower entry way is charged and exploded blast holes at halite throughout length of cut, forced by perforated pipes in loosened hydrochloric array of water or unsaturated brine. After formation of consolidated array is developed in above sequence located above layers Sylvinite and salt.

EFFECT: invention allows to increase efficiency of development unit.

1 cl, 6 dwg