Construction and Analysis on Extra-shallow Pipe-jacking Model

A harmful soil deformation of overlying soil disturbance by extra-shallow pipe jacking construction may lead to roadbed and pavement structural damage,and extra-shallow coverage of overlying soil deformation is sensitive to disturbance.It is therefore necessary to theoretically study the disturbance of soil and surface deformation,currently which main stay experience research in the construction stage,caused by pipe jacking.And then the impact on the surrounding environment and the danger level are estimated,in order to take effective preventive measures to avoid construction disease.Based on Chongqing city drainage works dinning of pipe jacking,come to a different thickness of overlying soil pipe jacking induced deformation.The results on numerical simulation of the vertical soil disturbance and ground deformation by pipe jacking show deformation law under different thicknesses of overlying soil by pipe jacking.