19th WORLD CONFERENCE OF THE ASSOCIATED RESEARCH CENTRES FOR THE URBAN UNDERGROUND SPACE, Belgrade, Serbia, November 4-7, 2025. (Paper No: 2.10.150, pp. 355-360)
АУТОР(И) / AUTHOR(S): Xin-Hao Min, Yan-Ning Wang, Shuilong Shen
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DOI: 10.46793/ACUUS2025.2.10.150
САЖЕТАК / ABSTRACT:
This study proposes an enhanced method that integrates KCII with the Energy per Revolution Index (EPRI) derived from shield operational parameters. The method fuses operational parameters such as thrust, torque, cutterhead rotational speed, advance rate, soil chamber pressure, and penetration rate. Data are processed based on each cutterhead revolution, which represents dynamic characterization of geological conditions ahead of the tunnel face. A sliding window approach calculates the mean and standard deviation of KCII and EPRI to establish identification thresholds. Four distinct identification logics are developed and evaluated: KCII only, dual conditions of EPRI indicators, a combined approach of all indicators, and any two indicators. Application to two sections of Xuzhou Metro Line 4 validates method effectiveness and demonstrates high accuracy and robust generalization. Results shows that the multi-indicator fusion logic significantly improves accuracy compared to single-indicator methods, and offers real-time geological insights to support safer and more efficient shield tunnelling operations.
КЉУЧНЕ РЕЧИ / KEYWORDS:
Shield tunnelling, Karst strata, Earth pressure balance, Shield parameters, Identification method
ПРОЈЕКАТ / ACKNOWLEDGEMENT:
The research work was funded by Guangdong Provincial Basic and Applied Basic Research Fund Committee (2022A1515011200), Science and Technology Planning Project of Guangdong Province of China (STKJ2021129), Research on intelligent construction technology and key control technology of shield tunnel for protecting environment in karst area (CR17GD-GD-XZ6103-JSFW-2023-001).
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