With the gradual depletion and limited mining of inland river sand resources,the supply of sand is far from meeting the demand for construction sand in the market,and the supply-demand contradiction is becoming increasingly serious.Sea sand resources as a substitute for river sand are gradually becoming a trend.The construction of sea sand mining is an important stage and step in the development and utilization of sea sand resources.Jet sand mining uses vacuum suction technology to mine and transport sea sand to the sand mining vessel for sand washing before being transported to the unloading area.It has the characteristics of a large underwater excavation depth and a high yield.Based on the construction process of a jet sand mining vessel,the hydraulic principle,sand washing and sorting,and overflow pipe tailings discharge process of the jet pump sand suction were analyzed in detail.The research results provide practical engineering experience for the development and utilization of sea sand resources in China,and can also provide reference for the formation of relevant specifications for subsequent jet sand mining construction technology.
sea sandjet sand mining vesseljet pumpssand washing and sorting
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