FIELD: mining.
SUBSTANCE: invention refers to development of deposits, particularly, gravel deposits, and can be implemented in mining industry. The method consists in stripping sand, in excavating and transporting sand to a hopper of a washing installation, in concentrating and in piling. Prior to transporting sand into the hopper of the washing installation, sand is piled in a trench laid in the center of the gravel deposit along the length of a production block at the depth below the level of the soil of the sand bed; the trench is filled with water. Also sands are piled in the trench below the water level, and their successive excavation is performed by the underwater method.
EFFECT: increased degree of disintegration of hard washed clayish sand and reduced process losses of valuable component with reduced cost for sand transporting.
2 dwg
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