Research on ground subsidence in shield tunneling construction based on CC method

摘要

Ground subsidence caused by metro shield structure construction has serious effect on surface building facilities. In metro shield construction activities, the tunneling process will disturb the balance of original soil, which is likely to be magnified or inhibited by the nonlinear characteristics of geological condition, formation morphology, formation thickness, porosity, moisture content, and other factors. Such disturbance leads to the macro subsidence process with chaotic characteristics. Through the appliance of CC chaotic prediction method and the combination of finite element and fractal kinetics theories, the essay does research on the dynamic characteristics of shield construction settlement, and provides a technical support for the ground subsidence formation mechanism and risk control.