Tunnel lining structure health monitoring method and system based on digital twinning

The invention discloses a tunnel lining structure health monitoring method and system based on digital twinning, and relates to the technical field of tunnel lining structure health monitoring. The system comprises a data acquisition system, a database system, a data processing system and a decision-making system; the data acquisition system comprises a surrounding rock displacement sensor, a surrounding rock pressure sensor, an underground water pressure sensor, a lining structure stress sensor, a secondary lining steel bar stress sensor and a lining structure deformation collector; the database system comprises a data transmission cloud platform, a digital twinning database and a theoretical threshold database; the data processing system comprises a data analysis platform; the decision-making system comprises an early warning module and an evaluation module. According to the method and system, health monitoring is conducted on stress and deformation data of a tunnel lining structure, the health state of the