Abstract：
This paper takes a deep-pit excavation project in Shanghai as an example, illustrating relevant technologies that determining the deformation and displacement of the subway tunnel. And it analyzes the influence of deep-pit excavation on nearby subway by combining the subway tunnel monitoring data together. During deep-pit excavation, the safety of subway tunnel structure are granted by effective live surveillance on the whole process, using advanced technics like automatic monitor on tunnel deformation and displacement, thus both underground structure and operational safety can be granted. By analyzing monitoring data, conclusion can be made that subway tunnel is influenced by the deformation and displacement of the nearby engineering, which provide both technical and theoretical support to the further research on mechanism of deformation and displacement.
