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盾构隧道施工产生的土体扰动会影响土体强度并使土体产生变形,引起地表沉降。以江阴市澄江西路隧道工程为依托,采用非开挖方法埋设水平测斜管形成沉降监测剖面来实时监测施工面上覆土体变形,进而对盾构隧道施工微扰动进行现场监测研究。数据分析表明,水平测斜监测与施工监测地表沉降的数据符合性较好,可作为类似项目的测试手段。
Soil disturbances caused by shield tunnel construction will affect soil strength and cause soil deformation, causing surface subsidence. Based on the project of Chengjiangxi Road Tunnel in Jiangyin City, the horizontal inclinometer tube is used to form the settlement monitoring profile to monitor the deformation of the soil cover on the construction surface in real time, and the on-site monitoring of the construction perturbation of the shield tunnel is conducted. Data analysis shows that the horizontal inclinometer monitoring is in good agreement with the data of construction monitoring ground subsidence and can be used as a test measure for similar projects.