The company added that the tunnel can be built much closer to the surface, which means that afterwards pedestrians have to walk only a few number of stairs when crossing. The stability of the overall structure is increased by the rounded corners and the slight bulge of floor and ceiling.
MH Box Machine is a further development of the MH partial-face excavation technology that has been used successfully for more than 35 years. These machines have established themselves as the most efficient tunnelling equipment when building tunnels and pipelines above groundwater level, because of their simple design, low acquisition and operating costs and excellent performances, Herrenknecht sated.
