Method of laying a product of great length in the ground, and devices for its implementation.

摘要

The invention relates to a method for laying a product of great length (40) in the soil, comprising breaking up the soil while depositing a tube (13) and, at the same time, pulling the product from one end to the other. the inside of the tube by means of a magnetic drive device (14) comprising a yoke and a core received in the yoke, these parts being arranged to produce between them a radial magnetic field capable of axially immobilizing the core with respect to the cylinder head, the tube passing through the air gap between the cylinder head and the core and the product being fixed to the core. The traction on the product is produced by moving the cylinder head. BR/ The invention also relates to an associated laying device as well as the magnetic drive device itself.