Numerical Investigation of Ground Settlements Induced by the Construction of Nanjing WeiSanLu Tunnel and Parametric Analysis

Anato, Neurly Josita; Chen, Jian; Tang, Aiping; Assogba, Ogoubi Cyriaque

doi:10.1007/s13369-021-05642-3

Cited by 11 publications

(2 citation statements)

References 36 publications

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“…The outcomes of the analysis highlight the three-dimensional nature of the deformation mechanisms taking place near the advancing front, the effects produced by the different tunnelling operations, and the role of the different structural elements. Anato et al [26] explored the effects of tunnel lining strength, grouting strength, and shield excavation speed in heterogeneous soils on ground settlement.…”

Section: Empirical Formula Methodsmentioning

confidence: 99%

Ground Deformation of Shield Tunneling through Composite Strata in Coastal Areas

Wu,

Xu,

Wang

et al. 2024

Buildings

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In order to mitigate ground deformation during shield construction in both upper soft and lower hard strata of coastal areas, a numerical simulation was executed. This simulation assessed surface deformation under varying stratum ratios, grouting pressures, and earth bin pressures. The evaluation was primarily based on the amount of ground deformation, which revealed that hard rock strata offer superior settlement control compared to soft rock strata. The excavation of the right tunnel line increased disturbance to the left line at higher stratum ratios. Surface deformation demonstrated a linear correlation with earth pressure, with 130 kPa identified as the optimal point. Higher pressures resulted in extrusion deformation and ground uplift. Grouting pressure had a minimal impact on stratum deformation over time. The stratum ratio exerted the most significant influence on settlement, followed by earth pressure, with grouting pressure having the least impact. In the context of coastal tunnel construction, hard rock excavation is favored. Earth pressure must be balanced to prevent subsidence or uplift, while excessive grouting pressure does not significantly reduce subsidence. Grouting pressure should ensure the complete filling of voids.

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Section: Empirical Formula Methodsmentioning

confidence: 99%

Ground Deformation of Shield Tunneling through Composite Strata in Coastal Areas

Wu,

Xu,

Wang

et al. 2024

Buildings

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“…In recent years, numerical simulation methods have been widely employed to solve the interdisciplinary problems encountered in underground engineering, involving the surrounding rock deformation affected by novel metallic rock support materials [21,22] and the surface settlement issues induced by shield tunnelling [23][24][25][26][27][28][29][30]. Wang et al [31] employed particle flow to simulate surface settlement in sandy soils, revealing its dynamic nature involving soil arch formation and destruction.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Surface Settlement Induced by Shield Tunnelling: Grey Relational Analysis and Numerical Simulation Study on Critical Construction Parameters

Luo,

Wang,

Wang

et al. 2023

Sustainability

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Excessive surface settlement poses significant challenges to shield tunnelling construction, resulting in damage to adjacent buildings, infrastructure, and underground pipelines. This study focused on investigating the surface settlement induced by shield tunnelling during the construction of Qingdao Metro Line 6 between Haigang Road Station and Chaoyang Road Station. Firstly, the settlement data from the left line of the shield tunnel were evaluated by grey relational analysis. The relational coefficients were calculated to assess the correlation degrees of each influential parameter. Subsequently, the four critical influential parameters with the highest relational degrees were chosen to investigate their effects on surface settlement through numerical simulations under different scenarios. The results show that the four parameters with the highest relational degrees were thrust, grouting pressure, earth pressure, and strata elastic modulus. It should be noted that the strata elastic modulus significantly affects surface settlement, while the grouting pressure influences the settlement trough width in weak strata. Moreover, improper thrust magnitude can lead to an increase in surface settlement. Based on these findings, recommendations are proposed for the right-line tunnel construction and practical countermeasures for surface settlement during shield tunnelling construction are provided.

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Empirical, Statistical, and Machine Learning Techniques for Predicting Surface Settlement Induced by Tunnelling

Huat

Armaghani

Momeni

et al. 2023

Emerging Trends in Mechatronics

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Numerical Investigation of Ground Settlements Induced by the Construction of Nanjing WeiSanLu Tunnel and Parametric Analysis

Cited by 11 publications

References 36 publications

Ground Deformation of Shield Tunneling through Composite Strata in Coastal Areas

Ground Deformation of Shield Tunneling through Composite Strata in Coastal Areas

Analysis of Surface Settlement Induced by Shield Tunnelling: Grey Relational Analysis and Numerical Simulation Study on Critical Construction Parameters

Empirical, Statistical, and Machine Learning Techniques for Predicting Surface Settlement Induced by Tunnelling

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