After that, Hsich improved the prev

After that, Hsich improved the previous research results and obtained the deformation characteristics that could predict the surface settlement at home and abroad during foundation pit construction. In a further study, Hsich divided the mechanical influence area during foundation pit construction into two influence blocks: one was the main influence block with significant disturbance; Second, the disturbance is relatively small secondary influence block. Osaimi A E et al., analyzed the foundation pit of soil after excavation process intermediate complete back wall wall elastic consolidation effect, get the following conclusion: excavation speed faster, reduce the coefficient of permeability of soil and soil drainage speed becomes slow, the speed of consolidation and consolidation of soil can be showed significantly lower, the soil body of excess pore water pressure will reduce gradually, will eventually be fully dissipate.By using finite element simulation software, Fan Y Q and other scholars carried out numerical analysis on the foundation pit. This paper mainly studies the relationship between consolidation and deformation, and obtains some parameters that affect the characteristics of foundation pit after construction, including the excavation speed of foundation pit construction, the buried depth ratio of the supporting wall into the soil, the permeability coefficient of the soil itself and the water level height of groundwater. Liu and Tao carefully analyzed the results of previous studies and further carried out a systematic and comprehensive study on the anti-uplift reinforcement of foundation pits. Later, based on these studies, Chalermyanont T. and Low B.K et al. studied and analyzed the self-weight stability of the underground diaphragm wall and the strength of the soil behind the diaphragm wall in the foundation pit engineering.