An innovative implementation of the jet pump in trenchless technologies

During the presentation, there will be discussed the topic of implementing the jet pump with the hydraulic unit into the microtunneling process. This can help increase the drilling length for small diameter conduits (< DN800) up to several hundred meters. For Direct Pipe technology it will be possible to install steel 20–36” pipelines up to 1000 meters long. What’s important, durability and reliability of a jet pump are significantly greater than in the case of centrifugal pumps.

Dymitr Petrow-Ganew, Herrenknecht AG

The Faculty of Mechanical Engineering of the Technical University of Lodz graduate. Polish trenchless technology precursor. Since 1993, the promoter of HDD method. He organized the first seminars and workshops concerning HDD in Poland (1996-1999). Since 2003 he has been working for the German company Herrenknecht AG. He introduced, among the others, many TBM machines to Polish market, e.g. for metro tunnel construction. He authored the several publications and papers on microtunnelling and TBM shields. He is a member of the international organizations ISTT, ITA AITES and a member of Underground Construction Subcommittee of the Polish Committee of Geotechnics.