Prediction of Shield Tunneling-induced Ground Settlement Considering Soil-water Coupled and Around Soil Disturbance Damage

摘要

To evaluate the influence of soil-water coupled and shield tunnel construction induced around soil disturbance damage on ground surface settlement, the process of shield tunnel construction induced around soil disturbance is analyzed, the FLAC~(3D) numerical simulation are carried out, and a newly-modified tunneling-induced ground settlement calculation method based on disturbance degree of around soil and soil-water coupled is presented, and these methods are applied in case of Beijing Metro 10th Line. It is indicated that considering the influence of the shield tunneling-induced around soil disturbance damage, and soil-water coupled induced soil properties weakening and the excess pore water pressure dissipating induced soil consolidation to the ground surface settlement are necessary, the calculating result of the newly-modified surface settlement prediction method, and the result FLAC~(3D) numerical simulation all agree well with in-site observed data of Beijing Metro 10th Line.