FIELD: hydraulic structures. SUBSTANCE: casing pipe is forced from catch basin shaft into ground, and pipe is introduced into casing for gravel hydraulic filling. Gravel is filled by sections and the pipe is withdrawn. During hydraulic filling, casing section is filled with gravel. Pipe for hydraulic filling is withdrawn from fully filled section up to half of its length to fill the next section. EFFECT: higher efficiency. 2 cl, 1 dwg
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