METHOD OF PEBBLY DUMPING DURING DREDGING DEVELOPMENT OF PLACERS Russian patent published in 2019 - IPC E21C50/00 

FIELD: mining.

SUBSTANCE: present invention relates to mining and can be used for underwater mining of rocks with the help of multi-bucket dredges. Method for pebble dumping in the course of dredging development of placers, involving sand extraction by layer dredging, screening in a dragon, movement of the oversize fraction onto the belt conveyor of the stacker and discharge into the pebble dumps, when dredging the upper layer, the stacker is installed horizontally relative to the pontoon, and then with each dredging layer the angle of lifting of the stacker is changed by a value calculated as per mathematical dependence.

EFFECT: higher efficiency and reduced power consumption during dumping of pebble dump.

1 cl, 1 dwg