Evaluation of segment convergence and settlement of subway shield tunnel in water-rich complex stratum

Based on the shield tunnel construction of left line Guowei road station-Qingshan lake west station Nanchang metro 3, study focuses adverse effects segment convergence and settlement deformation vault arch bottom in process water-rich complex stratum. The time-space curves value typical monitoring sections are drawn, their variation laws analyzed, values data analyzed tested. analysis results, qualitative quantitative evaluation overall or local state each object is carried out. results show that cumulative section lower than warning value, has a systematic offset horizontal vertical directions clearance.