Research On The Influence Of Deep Excavation On Surrounding Environment

The problem of deep excavation engineering has always been a hot research field of geotechnical engineering because urban deep excavations are often located in important positions of cities where there are many surrounding buildings and they will adversely affect the surrounding environment.As environmental protection has become a key issue in engineering design and construction,deformation control is also the key to the success of environmental protection.In order to protect the normal use and safety of the structures and other facilities adjacent to deep excavations,the in-depth study of the above problems is particularly urgent and of great practical significance,and this paper has done the following work:Firstly,this paper discusses the current situation of theoretical researches in detail on the influence of deep excavation on the surrounding environment such as surface settlement outside the pit and adjacent buildings at home and abroad.Then,the theory of deep foundation pit excavation deformation is summarized and analyzed,and the influence of ground settlement,pipeline deformation and building deformation caused by excavation are summarized,and the calculation method of applicable excavation deformation analysis is given.Secondly,by means of numerical simulation,a three-dimensional model of a deep excavation project in Changchun and its surrounding environment has been established to simulate the influence of the excavation engineering on the surrounding buildings and pipelines and compare the calculated values with the actual monitored values.Through numerical analysis,the deformation law of the ground surface,surrounding structure,surrounding buildings and pipelines in theprocess of deep foundation pit excavation is obtained.This paper discusses the deformation of the building at different positions by changing the distance between the building and the deep foundation pit and comparing the deformation of the building with the requirements of the code to obtains the change of the internal force of the building structure and the possible location of damage,and finally the deformation process of the building under the influence of the deep foundation pit excavation is obtained;through the simulation of pipelines with different distances,depths and materials,the deformation of pipelines under different conditions is obtained,and the change of internal force is analyzed.The relationship between pipelines and soil during the excavation of deep foundation pits is obtained,and the deformation process is analyzed.