Abstract: A bundle of tubes or pipes is arranged without trenches according to a fluid-assisted drilling method. A bore channel is made in a first boring step and the bore channel is widened when the bore/flushing head is removed therefrom, the bundle of tubes being drawn into the bore channel. The bundle is composed of individual tubes and flanges arranged lengthwise at a distance from and used as spacers for the tubes. A method is also described, wherein a rotational decoupling device prevents the rotational movement of the bore/flushing head produced during the removal process from being transmitted to the bundle of tubes. The bundle of tubes are supported by stabilizing devices inside the bore channel in the same spatial position as that of the tubes in relation to each other and the surrounding environment and are drawn through the bore channel.

Abstract: The inventions concerns to a bundle (1) of tubes for the laying of tubes (2) by means of a trenchless laying according to the fluid-assisted drilling method, in which in a first drilling process a drilling channel (9) is generated and during the retracting movement of the boring-flushing head (5) this drilling channel (9) is expanded and in this process the bundle (1) of tubes is retracted into the drilling channel (9). Such a bundle (1) of tubes stands out by that the bundle (1) of tubes is formed by a number of single tubes (2) which are ordered in distance to each other by means of flanges (3) distantly arranged at the tubes (2) in lengthwise direction (15) of the tubes (2).