A plastic strain-induced damage model of porous rock suitable for different stress paths
C Ren, J Yu, S Liu, W Yao, Y Zhu, X Liu - Rock Mechanics and Rock …, 2022 - Springer
It is extremely difficult to accurately predict the rock damage evolution during the
underground space development or the deep excavation activity. In this paper, based on the …
underground space development or the deep excavation activity. In this paper, based on the …
[HTML][HTML] Scientific problems and research proposals for Sichuan–Tibet railway tunnel construction
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 …
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
This paper presents the analytical solutions for the responses of tunnels excavated in rock
masses exhibiting strain-softening behavior. Since previous analyses give little …
masses exhibiting strain-softening behavior. Since previous analyses give little …
Experimental and theoretical investigation of coupled damage of rock under combined disturbance
Cyclic loading and confining pressure unloading are two common types of disturbance
effects in rock engineering. In this study, a series of triaxial tests under combined …
effects in rock engineering. In this study, a series of triaxial tests under combined …
A novel semi-analytical solution to ground reactions of deeply buried tunnels considering the nonlinear behavior of rocks
The nonlinearity of rock becomes more significant as the buried depth increases, which
changes the stress redistribution and deformation patterns during tunneling. In this study, a …
changes the stress redistribution and deformation patterns during tunneling. In this study, a …
[HTML][HTML] Large deformations in deep tunnels excavated in weak rocks: Study on Y-Basque high-speed railway tunnels in northern Spain
C Iasiello, JCG Torralbo, CT Fernández - Underground Space, 2021 - Elsevier
Designing the support system for a deep tunnel in weak rock is always challenging, because
a misjudgment of real rock behavior can lead to failures. During the construction of the …
a misjudgment of real rock behavior can lead to failures. During the construction of the …
Viscos-elastic-plastic solution for deep buried tunnels considering tunnel face effect and sequential installation of double linings
Tunnels excavated in soft rock under high in situ stress are usually accompanied by large
time-dependent deformation, slow convergence, and long periods of increased support load …
time-dependent deformation, slow convergence, and long periods of increased support load …
Gas seepage in underground coal seams: Application of the equivalent scale of coal matrix-fracture structures in coal permeability measurements
H Guo, H Tang, Y Wu, K Wang, C Xu - Fuel, 2021 - Elsevier
Coal is a complex dual-porosity porous medium that consists of both fractures and coal
matrices containing pores. The gas seepage characteristics in coals are closely related to …
matrices containing pores. The gas seepage characteristics in coals are closely related to …
A new numerical procedure for elasto-plastic analysis of a circular opening excavated in a strain-softening rock mass
A simple numerical procedure for calculating the distribution of stresses and radial
displacements around a circular tunnel excavated in a strain-softening Mohr–Coulomb or …
displacements around a circular tunnel excavated in a strain-softening Mohr–Coulomb or …
[HTML][HTML] A post-peak dilatancy model for soft rock and its application in deep tunnel excavation
The dilation angle is the most commonly used parameter to study nonlinear post-peak
dilatancy (PPD) behavior and simulate surrounding rock deformation; however, simplified or …
dilatancy (PPD) behavior and simulate surrounding rock deformation; however, simplified or …