INSTALLATION FOR BOREHOLE HYDRAULIC EXCAVATING OF MINERALS Russian patent published in 2009 - IPC E21C45/00 

FIELD: mining.

SUBSTANCE: invention refers to mining and can be implemented at open development of mineral deposits by method of borehole hydraulic excavation. The installation consists of a high pressure column with channels for power water supply and for pulp lifting, of monitor nozzle, of a hydraulic lift, of a receiving chamber with openings and of a hollow head with a nozzle of the hydraulic lift. The installation is equipped with movable and fixed knives, with a spring loaded piston installed in the cavity of the head and designed to travel, and with guides located on sides of the openings; also the movable knives are installed in the guides, while the fixed knives are arranged in the openings. The movable knives are connected to the piston by means of rods. The invention facilitates reducing idle time and carrying out excavating process practically continuously to chamber completion.

EFFECT: reducing idle time and carrying out excavating process practically continuously to chamber completion.

4 cl, 3 dwg