Long-term safety evaluation of soft rock tunnel structure based on knowledge decision-making and data-driven models

Zhao, Liangliang; Yang, Wenbo; Wang, Zhilong; Liang, Yang; Zeng, Zhikai

doi:10.1016/j.compgeo.2024.106244

Cited by 8 publications

(1 citation statement)

References 49 publications

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“…After the tunnel is built, the tunnel structure is affected by the soft rock creep effect. The pressure on the structure can easily reach its upper limit, leading to problems such as cracking of the lining, extrusion or falling blocks, causing safety hazards 19 . In tunneling operations, tunnel structures are susceptible to complex groundwater and geological conditions, construction disturbances around the tunnel, and other factors.…”

Section: Introductionmentioning

confidence: 99%

Model test study on the mechanical response of the deep buried tunnel lining

Duan,

Feng,

Song

et al. 2024

Sci Rep

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Deep-buried tunnels with weak surrounding rock are frequently encountered issues in traffic engineering. It plays an important role in the excavation process and the project operation. This paper applies the theoretical analysis and laboratory test related to four different conditions in terms of their thickness to determine the mechanical response of deep-buried tunnel lining. Then, the energy dissipative structure theory is employed to explain the experimental results. This paper has made the following achievements: firstly, it is found that the toughness of the secondary lining was found to be often the most important indicator of tunnel safety, with better-toughness linings having higher tensile strength and crack resistance. Secondly, it suggests that the inclusion of steel reinforcement in the concrete lining can effectively improve the secondary lining toughness. Finally, it proves that the more ductile liner had more energy, higher load-carrying capacity, and was better able to maintain the overall stability of the structure.

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Section: Introductionmentioning

confidence: 99%