[HTML][HTML] Scientific problems and research proposals for Sichuan–Tibet railway tunnel construction

D Zhang, Z Sun, Q Fang - Underground Space, 2022 - Elsevier
Abstract The Sichuan–Tibet railway construction has received significant attention from both
China and abroad. The new section from Ya'an to Nyingchi is about 1018.6 km long …

Model test and numerical analysis for the face failure mechanism of large cross-section tunnels under different ground conditions

Z Sun, D Zhang, A Li, S Lu, Q Tai, Z Chu - Tunnelling and Underground …, 2022 - Elsevier
Face stability protection is a critical issue during large cross-section tunneling. This study
investigates the evolution mechanism of tunnel face instability with different ground …

An insight from rock bolts and potential factors influencing their durability and the long-term stability of deep rock tunnels

W Frenelus, H Peng, J Zhang - Sustainability, 2022 - mdpi.com
Selecting and designing the most suitable support systems are crucial for securing
underground openings, limiting their deformation and ensuring their long-term stability …

Convergence-confinement analysis for tunnels with combined bolt–cable system considering the effects of intermediate principal stress

Z Sun, D Zhang, Q Fang, N Huangfu, Z Chu - Acta Geotechnica, 2023 - Springer
The mechanical responses of tunnels reinforced by combined bolt–cable system are
investigated in this paper. An analytical model of the convergence-confinement type is …

[HTML][HTML] Analysis of the interaction between bolt-reinforced rock and surface support in tunnels based on convergence-confinement method

Z Sun, D Zhang, Q Fang, Y Hou, N Huangfu - Journal of Rock Mechanics …, 2024 - Elsevier
To investigate the interaction of the bolt-reinforced rock and the surface support, an
analytical model of the convergence-confinement type is proposed, considering the …

A constitutive model of freeze–thaw damage to transversely isotropic rock masses and its preliminary application

J Zhang, X Zhang, W Chen, Z Huang, R Du - Computers and Geotechnics, 2022 - Elsevier
A constitutive model was developed to study damage in transversely isotropic rock masses
caused by freeze–thaw cycles. The model was based on the Weibull distribution function …

Analysis of interaction between tunnel support system and surrounding rock for underwater mined tunnels considering the combined effect of blasting damage and …

Z Sun, D Zhang, Q Fang, J Wang, Z Chu… - … and Underground Space …, 2023 - Elsevier
When an underwater tunnel is constructed using the drill-and-blast method, the rock mass
around the tunnel undergoes significant blasting damage. Quantifying the combined effect of …

Large deformation characteristics and the countermeasures of a deep-buried tunnel in layered shale under groundwater

Z Sun, D Zhang, M Li, F Guo - Tunnelling and Underground Space …, 2024 - Elsevier
Deep-buried tunnels constructed through layered soft rocks undergo large deformation,
which threatens their safety and leads to construction delay. When a soft rock tunnel is …

Numerical modelling and field monitoring study on large-span tunnelling using pretensioned bolt–cable combined support system

J Luo, D Zhang, Z Sun, Q Fang, D Liu, T Xu… - … and Underground Space …, 2023 - Elsevier
This study focused on a new support method, a pretensioned bolt–cable combined support
system, for large-span tunnelling. The Badaling tunnel is a high-speed railway station tunnel …

[HTML][HTML] Control effect and optimization scheme of combined rockbolt-cable support for a tunnel in horizontally layered limestone: A case study

J Wang, D Zhang, Z Sun, F Peng - Journal of Rock Mechanics and …, 2024 - Elsevier
This study focused on the mechanical behavior of a deep-buried tunnel constructed in
horizontally layered limestone, and investigated the effect of a new combined rockbolt–cable …