基于盾构施工的地表监测数据分析及建模预测

Monitoring and Modeling of Surface Monitoring Fata Nased on Dhield Vonstruction

通过对地铁盾构施工引起的地表沉降监测数据进行分析,得出地表横向沉降规律基本符合Peak沉降理论,地表纵向沉降规律基本成平稳下降趋势。通过对地表监测点右线隧道盾构通过时影响的累计沉降数据进行数学建模,预测左线隧道盾构通过对地表的沉降影响,预测结果准确。得出在同等地质条件及施工参数下隧道盾构施工对地表的扰动规律,在实际工程中具有重要的指导意义。

Based on the analysis of surface subsidence monitoring data caused by the construction of subway shield,it is concluded that the law of horizontal settlement is consistent with Peak sedimentation theory,and the vertical settlement law of ground surface is basically declining.The mathematic modeling of the cumulative settlement data affected by the shield tunneling at the right channel of the surface monitoring point is used to predict the influence of the left tunnel tunnel shield on the settlement of the surface and the prediction result is accurate.It is concluded that the disturbance law of tunnel shield construction on the surface under the same geological conditions and construction parameters has important guiding significance in practical engineering.