Herrenknecht Ag

Steffen Praetorius

Tobias Gerhardt

Marc Peters

Tobias Engel

Christian Rein

The invention relates to a device () for producing a cavity in a soil from a starting point to a target point along a drilling line for introducing timbering for holding the cavity open having a tunneling head (), at the outer end of which at least one cutting element () for Stripping the soil is provided, wherein the tunneling head () has a receiving Chamber () which has an opening (), to which a face conveyor line () is connected, and in which at least a first nozzle () for discharging a liquid for transporting the stripped soil away from the receiving Chamber is provided, which first nozzle () is provided in such a way that the discharge opening thereof is oriented substantially in the direction of the face conveyor line, wherein the advancing drive takes place via an advancing device. It is provided here that at least one second nozzle () is provided which is arranged in such a way that the discharge opening thereof is directed substantially onto the soil to be stripped.

Device for producing a cavity in a soil

The invention relates to a system for laying underground cables or underground lines in the ground near the surface, in a borehole () along a laying route () between a start point () and a target point (), comprising a boring device () comprising an advancing head () for creating the borehole (), a drilling rod () and/or a casing (), wherein the diameter of the advancing head () is greater than the diameter of the casing () or of the drilling rod (), so that an annular space () is formed between the borehole wall () and the casing () or the drilling rod () and the annular space () is provided with lubrication and wherein the advancing head () relates to a displacement drilling head () or a drilling head system () comprising a drilling tool () and a drilling tool drive () for loosening the ground.

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Schwanau, Germany

Steffen Praetorius