DREDGER Russian patent published in 2020 - IPC E21C50/00 E02F3/88 

FIELD: mining.

SUBSTANCE: invention relates to mining equipment, namely to a device for development of placer mineral deposits by a dredging method. Dredge comprises a multi-bucket working element, stern beams and a stacker mounted on the pontoon. At the bottom of the cross-section along the entire width and perpendicular to the dredge axis there is a geotube interconnected with a system of flexible hoses pumping water from the dredging cut through the pump.

EFFECT: preventing dilution of gold-bearing sands during development due to formation of a geotube barrier.

1 cl, 2 dwg