Analysis of Excavation Parameters on Face Stability in Small Curvature Shield Tunnels

Yaliang Niu, Tielun Ren, Qiang Zhou, Xueyang Jiao, Jiuqiang Shi, Ke Xiang, Jin Tao, Qian Zhai () and Alfrendo Satyanaga
Additional contact information
Yaliang Niu: China Construction Eighth Bureau Rail Transit Construction Co., Ltd., Nanjing 210046, China
Tielun Ren: China Construction Eighth Bureau Rail Transit Construction Co., Ltd., Nanjing 210046, China
Qiang Zhou: China Construction Infrastructure Co., Ltd., Beijing 100029, China
Xueyang Jiao: China Construction Eighth Bureau Rail Transit Construction Co., Ltd., Nanjing 210046, China
Jiuqiang Shi: China Construction Eighth Bureau Rail Transit Construction Co., Ltd., Nanjing 210046, China
Ke Xiang: Bridge Engineering Research Center, Southeast University, Nanjing 210096, China
Jin Tao: Bridge Engineering Research Center, Southeast University, Nanjing 210096, China
Qian Zhai: Bridge Engineering Research Center, Southeast University, Nanjing 210096, China
Alfrendo Satyanaga: Department of Civil and Environmental Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave., 53, Nur-Sultan 010000, Kazakhstan

Sustainability, 2023, vol. 15, issue 8, 1-12

Abstract: 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.

Keywords: face stability; small curvature tunnels; ground settlement; numerical modeling (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:8:p:6797-:d:1126256

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