Mixed Ground Shield Tunneling Machine Selection And Propulsion Control Study

Wuhan Metro Line 2 complex geological conditions, TBM through Jing Guang Railway line and weak foundationed houses is a great security risk and construction organization is difficult. In this paper, due to special geological features and safety,study mixed formations shield machine to achieve the smooth progress, and point selection of universal joints assembled piece it all wrong, and the development of a comprehensive set of proven construction techniques. Thus, determine the choice of EPB shield machine, and with a combination of a small area of the cutter, the creative use of a new type is all wrong and the closure universal segments assembled shield technology onrush, shield technology out of the hole, ground structures protection, control significant risks, both to ensure that the tunnel axis to meet the design requirements and to ensure the operational safety and construction safety on the basis of existing railway, and accelerate the construction schedule and reduce construction costs.