FIELD: hydraulic engineering.
SUBSTANCE: invention relates to hydraulic mining. Hydraulic weighing device of downhole hydraulic unit includes separate vertically movable pressure waterway, shifted along inner side surface of pulp lifting pipe of airlift, and hydraulic weighing decompressed rock mass. Pressure waterway with jetting equipment at its end comprises immovably installed and configured to form flat high-speed vertically inclined reflected water jet box-shaped reflector with stereo forming hydraulic monitoring caps in bottom part. Hydraulic monitor and box-shaped reflector are located inside protective receiving array of airlift suction tip.
EFFECT: higher stability, efficiency and maximum productivity are provided.
1 cl, 1 dwg
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