FIELD: construction.
SUBSTANCE: method includes creation of a well along the specified line of drilling and installation of a pipeline. Contact forces are transferred to a drilling device via a pipeline made from assembled round reinforced concrete rings connected in series along with well construction, having in the inner cavity the location beds for placement of a replaced and a new pipeline on them. The drilling device is made as longitudinal and split with a cross section in the form of a ring with inner diameter more than the external diameter of the replaced pipeline with capability of sludge movement in the space between the inner cavity of assembled rings and outer surface of the replaced pipeline. The drilling device at the inner side is equipped with guide rollers. A cutting tool is placed in the front end part of the drilling device. High-pressure nozzles, from which drilling mud is injected, are placed in gaps between the cutting tool.
EFFECT: integrity of a replaced pipeline and possibility to use it for other needs.
6 dwg
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