Analysis of deformation control mechanism of prestressed anchor on jointed soft rock in large cross-section tunnel

G Li, Y Hu, S Tian, M Weibin, H Huang - Bulletin of Engineering Geology …, 2021 - Springer
Prestressed anchorage systems have been gradually applied in the treatment of large
deformation in soft rock tunneling. However, the research of support parameters on the …

[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 …

Analytical solutions for deep tunnels in strain-softening rocks modeled by different elastic strain definitions with the unified strength theory

ZY Sun, DL Zhang, Q Fang, GS Dui, ZF Chu - Science China …, 2022 - Springer
This paper presents the analytical solutions for the responses of tunnels excavated in rock
masses exhibiting strain-softening behavior. Since previous analyses give little …

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 …

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 …

Model tests on progressive collapse mechanism of a shallow subway tunnel in soft upper and hard lower composite strata

C Liu, S Zhang, D Zhang, K Zhang, Z Wang - Tunnelling and Underground …, 2023 - Elsevier
Numerous subway tunnels have been built in soft upper and hard lower composite strata.
However, the stability and bearing capacity of composite strata are difficult to predict …

[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 …

Analysis and countermeasures of large deformation of deep-buried tunnel excavated in layered rock strata: A case study

J Li, ZF Wang, Y Wang, H Chang - Engineering Failure Analysis, 2023 - Elsevier
Large deformation has been a common engineering problem during the construction of
tunnels in areas with high geo-stress, the large deformation of layered surrounding rock …

Displacement process analysis of deep tunnels with grouted rockbolts considering bolt installation time and bolt length

Z Sun, D Zhang, Q Fang, D Liu, G Dui - Computers and Geotechnics, 2021 - Elsevier
This study investigates the interaction process between grouted bolts and tunnel
surrounding rock, and establishes an analytical model for deep tunnels reinforced with …

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 …