Analysis of Excavation Parameters on Face Stability in Small Curvature Shield Tunnels
Niu Y. Ren T. Zhou Q. Jiao X. Shi J. Xiang K. Tao J. Zhai Q. Satyanaga A.
April 2023MDPI
Sustainability (Switzerland)
2023#15Issue 8
This study investigates the face stability of small curvature shield tunnels during excavation and its relationship with various excavation parameters. The stability of the excavation face is critical to the safety and efficiency of underground construction projects. Despite the increase in the use of small curvature shield tunnels in urban areas, research works on this type of tunnel are limited and the existing literature focuses only on straight shield tunnels. This study addresses this research gap through numerical simulations, analyzing the effects of different excavation parameters such as jacking force, cutting speed, and soil conditioning on face stability. The results of the study show that the excavation parameters significantly affect face stability. The findings can be used to optimize the performance of small curvature shield tunnels and support their continued development in urban areas.
face stability , ground settlement , numerical modeling , small curvature tunnels
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China Construction Eighth Bureau Rail Transit Construction Co., Ltd., Nanjing, 210046, China
China Construction Infrastructure Co., Ltd., Beijing, 100029, China
Bridge Engineering Research Center, Southeast University, Nanjing, 210096, China
Department of Civil and Environmental Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave., 53, Nur-Sultan, 010000, Kazakhstan
China Construction Eighth Bureau Rail Transit Construction Co.
China Construction Infrastructure Co.
Bridge Engineering Research Center
Department of Civil and Environmental Engineering
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