Face stability analysis of circular tunnels in layered rock masses using the upper bound theorem

Man, Jianhong; Zhou, Mingliang; Zhang, Dongming; Huang, Hongwei; Chen, Jiayao

doi:10.1016/j.jrmge.2021.12.023

Cited by 28 publications

(11 citation statements)

References 57 publications

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“…Combined with the stability analysis model established by Man et al [15] , the total work rate of the selfweight and internal energy dissipation along the failure boundary can be expressed as sin…”

Section: Analytical Modelmentioning

confidence: 99%

“…For illustration, a "spatial discretization point-by-point technology" [8] was proposed, and many researchers [9][10][11][12] have employed this method to scrutinize various factors influencing tunnel face stability. Man et al [13][14][15] studied the stability of tunnel faces in excavation sections where the rock mass often exhibits stratified characteristics. The above studies have significantly advanced tunnel face stability assessment.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, a stability database of the tunnel face under Grade Ⅴ surrounding rock was established according to the existing analytical solution [15] , and the response surface method was employed to develop the fundamental explicit expression for the safety factor. Subsequently, the MARS algorithm is used to construct an explicit expression depth correction factor, thereby extending the applicability of the equation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A fast and automatic establishment method of the calculation formula for the tunnel face safety factor based on analytical solution

Man,

Huang,

Chen

2024

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

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Assessing rock tunnel face stability when constructing mountain tunnels is of utmost importance because it is influenced by various factors, including the tunnel diameter, depth, excavation dimension, geological strength index, uniaxial compressive strength, and Hoek-Brown constant. This study established a tunnel face stability database based on analytical solutions that considered the correlation between the influencing parameters. Finally, a safety factor prediction equation was constructed by combining response surface methodology and the multivariate adaptive regression spline algorithm. The results of this study find applications at construction sites and provide a reference for the rapid evaluation of rock tunnel faces during construction.

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Section: Analytical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A fast and automatic establishment method of the calculation formula for the tunnel face safety factor based on analytical solution

Man,

Huang,

Chen

2024

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

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“…The general Quaternary alluvial layer was mainly composed of cobble‐gravel and silty‐fine sand, that is, the sandy pebble complex. The sandy pebble composite formation had a poor surrounding rock stability (Adam et al, 2017; Hu et al, 2019; Man et al, 2022; Wang et al, 2016; J. Z. Zhang, Huang, et al, 2021).…”

Section: Project Overviewmentioning

confidence: 99%

Dynamic evolution in mechanical characteristics of complex supporting structures during large section tunnel construction

Hua

Jinxun

et al. 2022

Deep Underground Science and Engineering

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The shallow tunnelling method (STM) often uses temporary supports to divide large section tunnels into several closed or semiclosed sections so as to share the upper load. The complex support system composed of primary and temporary supports can ensure safety during tunnel construction. Based on the large section tunnel of Beijing Subway Line 12, the mechanical characteristics of support system by the double-side-drift method (DSDM) during excavation and demolition were analyzed through numerical simulation and monitoring. The study showed that the middle cave excavation was the most critical stage of the DSDM, during which the load on the supporting structure increased significantly. The temporary vertical support bore most of the new load during middle cave excavation. During the demolition stage, the load was redistributed, which caused arch settlement and section convergence. The removal of the temporary vertical support exerted the greatest impact in this process. The lateral temporary inverted arch changed from axial compression to axial tension after the middle and lower caves were excavated. Based on the mechanical characteristics of the support system, some engineering suggestions were proposed for large section tunnel construction. These research results can provide reference for the design and construction of similar large section tunnels.

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“…Currently, the methods of tunnel stability are not limited to a narrow field. These methods (Sukkarak et al, 2019;Shiau and Al-Asadi, 2020;Kumar and Jain, 2021;Li T. Z. et al, 2021;Liu et al, 2022b;Zhang et al, 2022b;Man et al, 2022;Xue et al, 2022;Xue et al, 2023) are not only applied to but also inspired by other fields of research. The researchers of tunnel stability problems still have the power of sustainable development.…”

Section: Introductionmentioning

confidence: 99%

The stability evaluation of clay tunnels via the non-linear deterioration of physical and mechanical properties of surrounding rocks

Huang

Liu²,

Ma³

et al. 2023

Front. Earth Sci.

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Simple, fast, and reliable methods for the stability evaluation of tunnels can facilitate the construction and development of tunneling projects. The problems related to tunnel stability at this stage can be well analyzed via theoretical analysis method, model test method, or numerical analysis method. On the other hand, those methods are hard to be effectively analyzed these projects with higher importance, shorter decision and design period, and more urgent construction period. This paper proposed research works on the stability evaluation of clay tunnels. Firstly, a state function with the variables of stress and strain state is presented to predict the stress and strain states of surrounding rocks caused by tunnel excavation, which characterize the physical-mechanical state of surrounding rocks (also called stability state). Secondly, the non-linear deterioration of the physical and mechanical properties of surrounding rocks will be simulated, and the expressions and calculation methods of the tunnel stability reserve factor will be yielded. Finally, the results of the proposed method were compared with the strength reduction method and the limit equilibrium method with a clay tunnel example. The comparison between the three feature points of the arch crown, sidewall, and arch bottom showed that the stability reserve factor of the clay tunnel was smaller than those of the strength reduction method and the limit equilibrium method. The values of limit displacement obtained by the proposed method were closer to the field monitoring data than that of the strength reduction method. Therefore, this study could be better applied to the stability evaluation of clay tunnels.

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Face stability analysis of circular tunnels in layered rock masses using the upper bound theorem

Cited by 28 publications

References 57 publications

A fast and automatic establishment method of the calculation formula for the tunnel face safety factor based on analytical solution

A fast and automatic establishment method of the calculation formula for the tunnel face safety factor based on analytical solution

Dynamic evolution in mechanical characteristics of complex supporting structures during large section tunnel construction

The stability evaluation of clay tunnels via the non-linear deterioration of physical and mechanical properties of surrounding rocks

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