泥水盾构穿越吹填土变形实测分析

Measured deformation of dredger fill during slurry shield tunneling

由于吹填土地层的特殊性,在泥水盾构穿越吹填土过程中对地层易产生较大的扰动,从而会引起较大的地层变形。结合上海轨道交通11号线南段的工程实例,对此工程中不同施工工况条件下地表沉降横断面的实测数据的变化规律进行分析研究,进而提出泥水盾构穿越吹填土的施工控制措施,对类似工程具有重要参考价值。

Due to the particularity of dredger fill, slurry shield tunneling will cause large ground deformations during undercrossing dredger fill. Based on a practical example of Shanghai Metro line 11, the transverse variation curves of ground settlement under different construction conditions are analyzed. Some construction control measures are proposed for the slurry shield undercrossing dredger fill. This study may serve as reference for the similar projects.