| 摘要 |
FIELD: construction. ^ SUBSTANCE: invention relates to hydraulic mechanisation, in particular to technical means for production of minerals from under water. Drag head of hydraulic dredge includes tip with suction mouth, pipe of water supply and hydraulic giant. Hydraulic giant is equipped with nozzles for transportation of soil, which are directed towards tip. Nozzles for transportation of soil are equipped with additional nozzles for soil rippling, which are installed with the possibility to develop zone of ripped soil around the main nozzles. ^ EFFECT: improved efficiency of operation in development of tight compressed soils. ^ 5 cl, 19 dwg |
