More and more pipelines have to be constructed in difficult terrain, crossing mountains, bays or rivers. Herrenknecht is a leader in „Utility Tunnelling“, with technologies like microtunnelling, tunneling and HDD which dig without trenches and help to lay pipeline systems economical, reliable and without any disturbances for the environment.
The author wants to give in an overview in his lecture on all the advantages at a glance of the Herrenknecht tailor-made technologies.
Pipejacking with use of microtunnelling machines has been successfully used on several projects for under crossing rivers in difficult soil conditions.
HDD as a wee established technology goes for more ambitious projects, also with help of new tools like the Pipe Thruster.
The author wants to point up these technologies by means of some successfully completed projects.