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Enhanced safety assessment on tunnel excavation via refined rock mass parameter identification

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Název: Enhanced safety assessment on tunnel excavation via refined rock mass parameter identification
Autoři: Hongwei Huang, Tongjun Yang, Jiayao Chen, Zhongkai Huang, Chen Wu, Jianhong Man
Zdroj: Underground Space, Vol 24, Iss, Pp 142-161 (2025)
Informace o vydavateli: Elsevier BV, 2025.
Rok vydání: 2025
Témata: Rock tunnel, TA703-712, Deep learning, Engineering geology. Rock mechanics. Soil mechanics. Underground construction, Safety evaluation, Response surface method, Feature identification
Popis: This study employs computer vision and deep learning techniques to execute the refined extraction and quantification of rock mass information in tunnel faces. The integration of contact measurement data and surrounding environmental parameters leads to a proposal for rock mass quality prediction, utilizing integrated machine learning techniques. Subsequently, a 3D model is established by incorporating tunnel face features and environmental data. The safety factor of rock mass excavation is calculated through the utilization of the strength reduction method, and the analysis of rock mass stability on the continuous tunnel face is performed, considering factors such as rock stress and joint sliding. The investigation of variation patterns of excavation safety factors, influenced by multiple modelling factors, is conducted through the utilization of a response surface design method in 46 experimental studies. The research reveals the accurate characterization of complex fissure occurrence obtained in the field through a discrete fracture network. Furthermore, a negative correlation between the safety factor of tunnel excavation and the grade of surrounding rock is observed, with an increase in grade resulting in a decrease in the safety factor. The response surface method effectively discloses polynomial correlations between various parameters such as inclination angle, dip direction, spacing, density, number of groups, and the safety factor. This elucidates the impact patterns of these parameters and their coupling states on the safety factor. The study provides significant insights into the intelligent evaluation of safety for continuous tunnel excavation.
Druh dokumentu: Article
Jazyk: English
ISSN: 2467-9674
DOI: 10.1016/j.undsp.2024.09.007
Přístupová URL adresa: https://doaj.org/article/452f77aaf7f84d818de2a2b4224bd3ed
Rights: CC BY NC ND
Přístupové číslo: edsair.doi.dedup.....de7d8f45d955b4e462e57c9c927b2555
Databáze: OpenAIRE
Popis
Abstrakt:This study employs computer vision and deep learning techniques to execute the refined extraction and quantification of rock mass information in tunnel faces. The integration of contact measurement data and surrounding environmental parameters leads to a proposal for rock mass quality prediction, utilizing integrated machine learning techniques. Subsequently, a 3D model is established by incorporating tunnel face features and environmental data. The safety factor of rock mass excavation is calculated through the utilization of the strength reduction method, and the analysis of rock mass stability on the continuous tunnel face is performed, considering factors such as rock stress and joint sliding. The investigation of variation patterns of excavation safety factors, influenced by multiple modelling factors, is conducted through the utilization of a response surface design method in 46 experimental studies. The research reveals the accurate characterization of complex fissure occurrence obtained in the field through a discrete fracture network. Furthermore, a negative correlation between the safety factor of tunnel excavation and the grade of surrounding rock is observed, with an increase in grade resulting in a decrease in the safety factor. The response surface method effectively discloses polynomial correlations between various parameters such as inclination angle, dip direction, spacing, density, number of groups, and the safety factor. This elucidates the impact patterns of these parameters and their coupling states on the safety factor. The study provides significant insights into the intelligent evaluation of safety for continuous tunnel excavation.
ISSN:24679674
DOI:10.1016/j.undsp.2024.09.007