Analysis on influence of consolidation and settlement of deep silt soil on existing pipeline – take the project of the fourth water supply pipeline to Macao as an example

Abstract

Abstract As time goes by in deep silt, the water in the shallow layers of the soil and the water pressure will both dissipate, causing greater deformation of the soil structure. Based on the analysis of the new pipeline in Zhuhai, the post-settlement of the existing pipeline in the silt is calculated by theoretical analysis and simulation. It is concluded that the displacement deformation of the water supply pipeline after 400 days of sediment consolidation is still in safety control and puts forward some optimization methods to ensure the safety and function of the pipeline and provide the guidance basis for the follow-up maintenance and construction. It has a certain practical value.