Dynamic Mechanism and Key Rectification Techniques of Shield Machine in the Vertical Plane.

With the development of the urban construction, the shield machine becomes more and more important as the main equipment to extend the underground space for the human being. In this paper, we investigate the dynamic mechanism of the shield machine in the vertical plane. Through this analysis, the basic requirement maintained balance of the shield machine while excavating is given. Meanwhile, the key rectification techniques about the deviation from the desired trajectory in vertical plane are discussed. This study is developed based on the engineering problems from which are frequently met in construction, and we hope to provide useful guidance to the actual excavating process. [ABSTRACT FROM AUTHOR]