Herrenknecht Mixshield S-850 – (tunneling)
The Herrenknecht Mixshield S-850 represents a class of specialized tunnel boring machines designed to tackle complex, water-bearing and mixed ground conditions while ensuring high levels of safety, precision and environmental…
Herrenknecht Mixshield S-1200 – (tunneling)
The Herrenknecht Mixshield S-1200 is a specialized tunneling solution designed for challenging subsurface conditions where mixed-face geology and groundwater presence require a versatile and reliable approach. Combining features of different…
Herrenknecht TBM AVN 1800 – (tunnel boring machine)
The Herrenknecht AVN 1800 is a specialized tunnel boring machine (TBM) concept tailored for small- to medium-diameter underground works. This article examines the machine’s typical design characteristics, operational fields, logistical…


