Calculation and Analysis of Soil Deformation Induced by Lubrication Mud Pressure During Pipe Jacking Construction

Abstract

Abstract As a key step to decide the pipe jacking construction success or failure, the control of lubrication mud performance and parameters directly affects the magnitude of jacking force and deformation of surrounding soil. In order to establish soil deformation model induced by lubrication mud pressure during pipe jacking construction, based on the mechanism analysis of lubrication mud and surrounding soil, using equivalent model of cavity in the semi-infinite elastomer on internal pressure solves the deformation of soil under the effect of mud pressure, referencing image method and stress function method, which deduces the analytical formula of stress and deformation of surrounding soils caused by mud pressure. At the same time, the pattern of soil deformation is analyzed and obtained, the overlying soil vertical displacement increasing with pipes buried depth increasing and the horizontal displacement of soil on both sides pipes increasing with the depth increasing at first then decreasing.