Control Study on Uplift Behavior of Underlying Metro Tunnel Caused by Pit Excavation

Taking the depot foundation pit excavation project of Xuzhou Metro Line 1 as the background, the rebound deformation of underlying metro tunnel after unloading is re-evaluated dynamically in the process of foundation pit excavation. The field measured data is analyzed and risk control countermeasures for underlying metro tunnel in foundation pit excavation is proposed. The uplift displacement of metro tunnel is effectively controlled, ensuring structural safety of foundation pit and underlying metro tunnel.