Abstract：The deformation of the retaining structure is one of the factors affecting the safety of subway station construction.The horizontal displacement of continuous wall was analyzed by the finite element method during the excavation of one subway station.According to the analysis of the monitoring date, the Elman network was also applied to the displacement predetermination of the continuous walls.And the relationships among the predicted value, measured value and the control values were also discussed.By bringing in the risk index, the risk parameter values of the measured and forecast data were calculated.And then, the reasonable prevention measures adapted to the certain risk level could be set by the manager.

Keyword：Continuous wall;horizontal displacement;risk analysis;retcining strulfore;