南宁富水砂层盾构施工变形规律分析及控制措施研究

Study on Deformation Law and Control Measures of Shield Tunneling in Nanning Water-Rich Sand Stratum

以南宁地铁某区间为研究对象,运用理论分析、现场监测和数值模拟相结合的手段进行研究,利用数值模拟软件模拟盾构机施工过程,分析了不同盾构掘进参数对沉降的影响,建立盾构施工参数与沉降的关系,通过与实测数据的对比分析总结了富水砂层盾构施工地表沉降的变形规律,提出富水砂层盾构施工的地表沉降控制措施。

Taking a certain section of Nanning Metro as the research object,this paper uses the means of theoretical analysis,field monitoring and numerical simulation to study,uses numerical simulation software to simulate the construction process of shield tunneling machine,analyzes the influence of different shield tunneling parameters on the settlement,and establishes the relationship between shield tunneling parameters and settlement.By comparing with the measured data,the deformation law of surface settlement of shield construction in water-rich sand layer is summarized,and the control measures of surface settlement of shield construction in water-rich sand layer are given,which can provide reference for similar projects.