Better understanding the failure modes of tunnels excavated in the boulder-cobble mixed strata by distinct element method

T Liu, Y Xie, Z Feng, Y Luo, K Wang, W Xu - Engineering Failure Analysis, 2020 - Elsevier
As a typical discontinuous medium, the boulder-cobble mixed strata (BCMS) are often faced
with the problems of easy collapse and difficult to effectively support in the construction of …

3D large-deformation modelling on face instability and sinkhole formation during tunnelling through non-uniform soils

X Chen, Y Hu, L Zhang, Y Liu - Tunnelling and Underground Space …, 2023 - Elsevier
Natural soils exhibit spatially non-uniform properties, bringing some uncertainties on the
evaluation of tunnel stability. This study therefore investigates the face instability and in …

Effect of relative density of 2D granular materials on the arching effect through numerical trapdoor tests

QW Liu, HL Wang, RP Chen, ZY Yin, XT Lin… - Computers and …, 2022 - Elsevier
The relative density and the fill height of granular materials influence the arching effect
significantly, from either the overall behavior of granular materials or the formation of the …

Soil Arching and Ground Deformation around Tunnels in Sandy Grounds: Review and New Insights

G Khandouzi, MH Khosravi - Journal of Mining and …, 2024 - jme.shahroodut.ac.ir
Granular materials used in engineering structures tend to experience arching under different
geotechnical factors. Arching is a factor of load transfer from the destroyed zone to stable …

[HTML][HTML] Theoretical analysis of three-dimensional ground displacements induced by shield tunneling

J Dalong, S Xiang, Y Dajun - Applied Mathematical Modelling, 2020 - Elsevier
In this study, an approach to estimate three-dimensional ground displacements induced by
shield tunneling is proposed by using the superposition method, advocating consideration of …

Experimental study on deformation failure mechanism of surrounding rocks for the deep-buried twin tunnels in inclined layered strata during the excavation

F Shen, Y Song, W Zhao, J Wang, J Zheng… - Rock Mechanics and …, 2023 - Springer
The paper conducts a physical model test to study the deformation mechanism of twin
tunnels excavated in deep-buried inclined thin-layered rock strata. During the excavation …

Probabilistic analysis of ground settlement induced by tunnel excavation in multilayered soil considering spatial variability

S Zhang, Y Wang, Q Gao, X Ma, H Zhou… - Computers and …, 2024 - Elsevier
Accurately evaluating and predicting the ground settlement during tunnel excavation are
crucial for ensuring the stability of tunnel structures. However, the traditional methods always …

Analysis of ground deformation induced by shield tunneling considering the effects of muck discharge and grouting

Z Ding, SY He, WH Zhou, T Xu, SH He… - Transportation Geotechnics, 2021 - Elsevier
Many methods have been proposed to predict ground deformation caused by shield
tunneling, but few of them provide real-time prediction because the required input …

[HTML][HTML] Large-Deformation Modeling of Surface Instability and Ground Collapse during Tunnel Excavation by Material Point Method

H Luo, S Zhang, M Sun, S Gong, C Hu - Buildings, 2024 - mdpi.com
Recent rapid urbanization has led to an increase in tunnel construction, escalating the
prevalence of ground collapses. Ground collapses, characterized by large deformation and …

Influence of sand layer thickness on the collapse mechanism of tunnels in soil-sand-rock composite strata

J Gao, S Zhang, C Liu, Y Zhang, X Guan - Engineering Failure Analysis, 2024 - Elsevier
Collapse is a severe event during metro tunnel construction, particularly in soil-sand-rock
composite strata. Variations in the thickness of sand layers, owing to their high …