Abstract：In the course of high rock slope excavation，the deformation data in the locale can be monitored，and it¢s useful to predicate the excavation deformation of high slope with the monitor data. According to the nonlinear characteristics of the excavation deformation of high slope，the displacements of the high slope of the Three Gorges are predicted by local-region method. The idea of the local-region method is introduced to the neural network，and the training samples are formed according to the theory of finding near points. The predicated displacements by the trained neural network are very close to those by the local-region method，and computational time is saving. The result shows that，based on the one-dimensional monitoring data，the displacement can be predicted by the method of nonlinear time series，and the method has practical value.
