FIELD: civil engineering. SUBSTANCE: widening 4 equal to value of soil melting aureole and profile following symmetrically predicted soil unstable sagging in melting aureole are made on ground surface 1 along lengthwise axis 2 of pipeline 3. Trench 5 of H width to lay down pipeline 3 with subsequent filling it with soil taken from the trench in its digging is broken in the widening. Melting unstable soil and sagging pipeline with concurrent introducing mineral soil with formation of ground core occur in the process of operation. EFFECT: decreased man-power. 2 dwg
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