Coupling dynamics modeling and vibration characteristics analysis of TBM main drive system under complex tunnelling conditions

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Analysis shows increased vibration impacts in TBM operations, indicating risks in soft surrounding rock environments.

Vibration characteristics significantly affect the reliability of TBM excavation processes, causing safety concerns.
As excavation penetration increases, average vibration rise peaks at 0.1493 g/mm during the critical range.
Modeling incorporates nonlinear excitations, enhancing understanding of system dynamics during tunneling activities.
Increased proportions of soft rock raise the lateral unbalanced load, amplifying the risk of equipment failure and accidents.

Zhi-xiong et al. (2025) studied this question.

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