Multi-step prediction model enhanced by adaptive denoising and encoder-decoder for shield machine cutterhead torque in complex conditions

•A multi-step prediction model for cutterhead torque is proposed.•Adaptive denoising and encoder-decoder are used to improve the model performance.•The model was validated using site data from the Heyan Road tunnel project.•This model has promising performance in complex geological and working condi...

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Veröffentlicht in:	Tunnelling and underground space technology Jg. 158; S. 106398
Hauptverfasser:	Xu, Deming, Wang, Yuan, Huang, Jingqi, Xu, Shujun, Zhou, Kun
Format:	Journal Article
Sprache:	Englisch
Veröffentlicht:	Elsevier Ltd 01.04.2025
Schlagworte:	Cutterhead torque Encoder-decoder model Long short-term memory Multi-step prediction Shield machine Shield machine Long short-term memory Cutterhead torque Encoder-decoder model Multi-step prediction
ISSN:	0886-7798
Online-Zugang:	Volltext
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Zusammenfassung:	•A multi-step prediction model for cutterhead torque is proposed.•Adaptive denoising and encoder-decoder are used to improve the model performance.•The model was validated using site data from the Heyan Road tunnel project.•This model has promising performance in complex geological and working conditions. Cutterhead torque reflects the obstruction extent of geological environment on the shield machine, and its prediction can assist operators to adjust control parameters to improve construction efficiency and avoid machine jamming. However, tunneling in complex geological or working conditions often results in high cutterhead torque fluctuations and noise, which seriously affects the accuracy of torque prediction. This study proposes a multi-step prediction model for cutterhead torque enhanced by adaptive denoising and encoder-decoder. In this model, a novel adaptive denoising method for cutterhead torque is employed to improve prediction accuracy under complex conditions. Moreover, by introducing encoder-decoder method, the processing capability for multi-time dimensional data and multi-step prediction performance of LSTM neural networks are further improved. The effectiveness of proposed model is verified through an application to the Heyan Road River Crossing project. The results of this study can assist operators in achieving precise adjustment of control parameters under complex conditions.
ISSN:	0886-7798
DOI:	10.1016/j.tust.2025.106398