Research of Three-Exponential Smoothing Method in Tunnel Displacement Prediction

摘要

Prediction of tunnel surrounding rock displacement is a hot topic. To accurately predict the displacement of tunnel surrounding, a new method named three-exponential smoothing method is proposed. Then, based on the measured displacement of a tunnel monitoring sections in Northwest area of Yuanyang tunnel located in Shanxi Province, with the proposed method, regression analysis and grey model as GM (1, 1) are all used to predict the displacement, the predicted results show that both the average error and variance based on three-exponential smoothing method are minimal. Therefore, the method is suitable for predicting the deformation of tunnel surrounding rock and can be applied to practical engineering.