MH Box Machine - Herrenknecht AG
The MH Box Machine excavates the soil using a hydraulically movable excavator arm as it is the case with conventional MH machines. Individual lining methods for individual project requirements For mechanized tunnelling with the newly designed MH Box technology two methods are generally available to line the tunnel: pipe jacking or in-situ concrete.
Tunnel boring machine - Wikipedia
A tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata. ... Micro tunnel shield method is a digging technique used to construct small tunnels, ...