English：

To address structural instability caused by geological heterogeneity, groundwater seepage, andexternal loading during deep foundation excavation construction in complex geological conditions, thispaper proposes a multidimensional monitoring and dynamic risk management system. The systemintegrates field measurements, numerical simulation, and data analysis, and incorporates a tiered earlywarning and emergency response mechanism based on real-time monitoring data. Key parametersmonitored include foundation excavation displacement, ground surface settlement, support internalforces, and groundwater levels. The results show that the proposed system can capture the developmenttrends of foundation excavation deformation and potential risk characteristics. By dynamically adjustingsupport measures and construction sequences, the system reduces deformation rates and settlement,thereby enhancing foundation excavation stability and realizing the safe, efficient and controllableconstruction of the deep foundation excavation.