富水砂层盾构施工地表沉降原因分析及控制措施

Cause Analysis and Control Measures of Ground Subsidence in the Shield Construction of Rich Water Sand Layer

盾构法施工过程中地表沉降过大会影响盾构隧道的正常使用和安全运营,特别是在建筑物、地下管线密集的情况下,隧道施工引起的地表沉降更应引起高度重视。论文通过深入分析富水砂层中盾构施工造成的地表严重沉降事件,提出了针对性的控制措施,为同类地层条件中盾构施工提供参考依据。

In the shield construction process, if the ground settlement is too large, will affect the normal use of the shield tunnel and safe operation, especially in the condition that the buildings and underground pipelines are dense, surface subsidence caused by tunnel construction should arouse our attention. Through in-depth analysis of the serious surface subsidence events caused by shield construction in the water rich sand layer, some pertinent control measures are put forward to provide reference for shield construction in similar stratum conditions