| Abstract: | With the development of municipal engineering, shield tunneling has been used in various kinds of underground constructions and underlines more popularly in urban area. Much more attention should be paid to the effect of tunnel construction on close environment. According to the space regularities of distribution of ground loss and by stochastic medium theory, it is assumed that ground movement process is of the property of stochastic process, and the soil displacement due to ground loss can be calculated. Combining with the basic elastic equations, the stress changes due to tunnel excavation can be calculated. Finally, with the help of computer programs, the soil displacement and superimposed stress are analyzed, which can help researchers to understand the environment effect of construction. And at the same time, these results can make(be of great help ) for in-situ engineers to make decisions on their own on these effects in advance. |
