FIELD: construction.
SUBSTANCE: method comprises breaking down the exhaust steel underground pipeline, separating it in longitudinal direction, and laying the new pipeline. The device comprises impact mechanism, expander connected with the wrench through a rope, and disturber made of hollow bushing with cuts and mounted in the face of the exhaust pipeline that enters the receiving well.
EFFECT: reduced power consumptions fro repairing.
4 cl, 2 dwg
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