压电传感技术在隧道与地下工程中的应用研究进展OA

As tunnel and underground engineering continue to advance toward greater burial depths and increasingly complex environmental conditions,monitoring of the surrounding rock-support system faces growing challenges,including high geostress,multi-physical field coupling,and the strong concealment of structural defects.Conventional monitoring methods have become increasingly inadequate for refined perception,particularly in the identification of localized concealed damage,the capture of dynamic events,and long-term environmental adaptability.Owing to its high-frequency response,active and passive integrated monitoring capability,and good embeddability,piezoelectric sensing technology has gradually expanded from bridges and geotechnical engineering into the field of tunnels and underground engineering.The fundamental mechanisms and monitoring modes of piezoelectric sensing technology were systematically reviewed,as well as its research progress in force and deformation monitoring of surrounding rock-support systems,lining defect identification,dynamic disturbance and disaster-response perception,performance degradation characterization under complex environments,and array-based,distributed,and wireless monitoring.The huge application potential of piezoelectric sensing technology was exhibited in local damage identification and dynamic response monitoring in underground engineering.Future research should focus on piezoelectric response mechanisms and parameter inversion,long-term service reliability under complex environments,array-based and systematic engineering deployment,and intelligent identification methods integrating mechanism constraints with data-driven approaches.Piezoelectric sensing technology is expected to be a key development direction for full-life cycle safety monitoring in intelligent tunnels and underground engineering.