The Deformation Analysis Of Land Subsidence By Dewatering In Foundation Pit In Dongying Area

Along with the expansion of urban construction in dongying area,the natural conditions of construction site becomes increasingly complex.Duing to the limitation of the construction condition,more and more areas adopt deep pit foundation to engineering.As the primary part of deep pit foundation construction,deep foundation pit dewatering played an important role in achieving construction safety and guaranteeing the quality of construction,and also became a important part of the foundation pit engineering?With the constant improvement of the foundation pit construction requirements,the relevant technology of the foundation pit dewatering also faced challenges.In addition to the flowing sand?piping problems of foundation pit water seepage damage in dewatering construction,there is also land subsidence caused by foundation pit dewatering,and it caused a certain influence on foundation pit and surrounding buildings.If the change analysis of seepage field caused by foundation pit dewatering is improper,lacking of effective control of settlement of foundation pit dewatering is bound to affect safety of foundation pit.This paper focuses on the settlement of soil caused by foundation pit dewatering,the main work has the following several aspects:First,this article emphatically explained the related content about the seepage theory,and this paper expound related development course of the seepage theory.This paper introduced relevant theoretical basis of seepage theory and explained the role of seepage theory in the foundation pit engineering.It provides theoretical basis for the simulation of foundation pit dewatering project.Next,this article explained the application in the foundation pit dewatering,and this paper expound the development process of the theory of foundation pit settlement.This article introduced the importance of foundation subsidence theory in the foundation pit engineering application.It explained the relevant settlement calculation method of foundation pit,and it provides the basis for settlement simulation.In the end,this article use FLAC3 D to build model and analysis about the project combined with a project example of dongying on the basis of geotechnical investigation report.This article simulated the seepage field and pore pressure of engineering,and explained soil displacement vector and the horizontal displacement and settlement displacement in engineering.To analysis the influence of different soil elastic modulus,precipitation depth and osmotic coefficient on the settlement.Two effective measures of controlling ground subsidence are proposed.1,Deepen the curtain;2,Layout recharge;to analysis the effect of two kinds of measures on land subsidence in different conditions.