By the in-suit investigation of some Lot of Shenzhen Metro project PhaseⅠand the test and construction monitor results
comprehensive research have been achieved in stratum and tunnel structure deformation. It is shown that tunnel vault settlement is more than ground settlement in watery
weakly and sandy stratum; then 3D movement trend of stratum deformation and construction space-time effects of each excavation step of overlap tunnel are gained. Finally
excess pore water pressure are measured around tunnel structure; and the distribution and movement regularity with excavation are displayed in no precipitation condition. The results can be used for reference in design and construction of metro tunnels under similar stratum.