micro tbm is mainly divide into three modes which is earth balance, slurry balance, and rock.
the micro tbm produced byour company can adopt different geological conditions, such as soft soil stratum, ultraclay stratum, hard rock stratum etc, according to user and construction requirement, make the whole complete machine plan, such as drive type, hinge joint modes, the structure configuration is reasonable, operate flexible, reliable performance, energy conservation and environment protection, the whole machine level reach international advanced level. this type machine of our company can save cost in city municipal administration underground water supply and drainage pipelines project, it make construction more safety and efficiency. and this kind of machine exportation breaks only german and japan etc developed country monopolistic complexion.