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Real-time Forecast Models for TBM Load Parameters Based on Machine Learning Methods

by   Xianjie Gao, et al.

Because of the fast advance rate and the improved personnel safety, tunnel boring machines (TBMs) have been widely used in a variety of tunnel construction projects. The dynamic modeling of TBM load parameters (including torque, advance rate and thrust) plays an essential part in the design, safe operation and fault prognostics of this complex engineering system. In this paper, based on in-situ TBM operational data, we use the machine-learning (ML) methods to build the real-time forecast models for TBM load parameters, which can instantaneously provide the future values of the TBM load parameters as long as the current data are collected. To decrease the model complexity and improve the generalization, we also apply the least absolute shrinkage and selection (Lasso) method to extract the essential features of the forecast task. The experimental results show that the forecast models based on deep-learning methods, e.g., recurrent neural network and its variants, outperform the ones based on the shallow-learning methods, e.g., support vector regression and random forest. Moreover, the Lasso-based feature extraction significantly improves the performance of the resultant models.


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