Browsing by Author "Song, Fei"
Now showing items 1-11 of 11
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A plastic-damage approach to the excavation response of a circular opening in weak rock
(2022-08)
Article
Restricted access - publisher's policyDuring opening construction, the accumulated wall displacement and the developing excavation damaged zone are the results of stress redistribution and inelastic behavior induced by both the microcracking damage and the ... -
Analysis and modelling of longitudinal deformation profiles of tunnels excavated in strain-softening time-dependent rock masses
(Elsevier, 2020-09)
Article
Open AccessRock mass behaviour model selection, in particular, to represent the post-failure behaviour and time-dependent behaviour of rock masses, are critical issues in the correct application of tunnelling design techniques such ... -
Anisotropic deformability and strength of slate from NW-Spain
(Elsevier, 2021-12)
Article
Open AccessSlates are metamorphic rocks characterized by the pervasive occurrence of cleavage or foliation producing a highly anisotropic mechanical behavior characterized by fissility. Deformability and strength of these rocks are ... -
Coupled solid-fluid response of deep tunnels excavated in saturated rock masses with a time-dependent plastic behaviour
(2021-12)
Article
Open AccessThis article provides a general numerical approach for modelling the response of deep tunnels excavated in saturated time-dependent plastic rock masses, considering a coupled solid-fluid interaction and time-dependent ... -
Hydro-mechanical modelling and analysis of multi-stage tunnel excavations using a smoothed excavation method
(Elsevier, 2021-07)
Article
Open AccessThe main objective of this article is to provide a general numerical approach for the hydro-mechanical (HM) modelling of tunnels excavated in saturated rock masses exhibiting plastic behaviour, considering a multi-stage ... -
Modelling time-dependent plastic behaviour of geomaterials
(Universitat Politècnica de Catalunya, 2021-06-28)
Doctoral thesis
Open AccessRepresenting the time-dependent plastic behaviour of geomaterials is a critical issue in the correct application of tunnelling design techniques such as the convergence-confinement method or numerical modelling. Furthermore, ... -
Modelling underground excavations in rock masses with anisotropic time-dependent behaviour
(Springer Nature, 2022-10)
Article
Open AccessWhen modelling rock masses that behave anisotropically and in addition present a time dependent behaviour, it is relevant to select a constitutive model able to represent their actual behaviour realistically. This article ... -
Numerical analysis of anisotropic stiffness and strength for geomaterials
(Science Press, 2023-02)
Article
Open AccessIn numerical modelling, selection of the constitutive model is a critical factor in predicting the actual response of a geomaterial. The use of oversimplified or inadequate models may not be sufficient to reproduce the ... -
Numerical solutions for tunnels excavated in strain-softening rock masses considering a combined support system
(2021-04)
Article
Open AccessIn this article, an alternative numerical procedure to calculate displacements and stresses of supported circular tunnels is proposed, considering the whole process of tunnel advancement, and sequential installation of the ... -
Size effect on the hydraulic behavior of fluid flow through a single rough-walled fracture
(Elsevier, 2021-04)
Article
Open AccessThis study provides a numerical approach to evaluate the effect of sample sizes on fluid flow through a single rough-walled fracture. The rough-walled fracture was generated by using mathematical statistics. Its aperture ... -
Toppling susceptibility of a single rock block resting on a regularly rough base
(2023-02)
Article
Open AccessToppling of individual rock blocks resting on an inclined surface has often been observed in nature. This instability mechanism has typically been analysed for simple block geometries, considering the contact between the ...
