FIELD: construction.
SUBSTANCE: invention relates to construction operations and can be used for trenchless replacement of underground pipelines at repair and reconstruction of underground utilities. A trenchless replacement method of existing emergency pipelines, which involves passage via an emergency section from an operating well to a receiving well of a mechanism assembly consisting of a reamer and an impact assembly, destruction of the previous pipeline and tightening of a new one, replacement is performed without any disconnection of the section being replaced, and bypass of flows is performed periodically as far as the receiving well is filled.
EFFECT: this invention allows leaving an emergency section of an underground pipeline in a connected state, which sufficiently simplifies replacement and makes it possible during winter season.
4 cl, 2 dwg
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