The present study responds to the poor treatment given to dilatancy in classical rock
mechanics post-failure problems such as tunnel or mine pillar design. A comprehensive …

This paper presents the analytical solutions for the responses of tunnels excavated in rock
masses exhibiting strain-softening behavior. Since previous analyses give little …

One of the critical design problems involved in deep tunnelling in brittle rock with continuous
excavation techniques, such as those utilizing tunnel boring machines or raise-bore …

This paper discusses the practical application of the Convergence-Confinement Method of
tunnel design to rock-masses that satisfy the Hoek-Brown failure criterion. The strength of …

Spalling and strain bursting has long been recognized as a mechanism of failure in deep
underground mines in hard rock and in deep infrastructure tunnels. The latter is a significant …

Deep rock tunneling exhibits a significant three-dimensional (3D) space effect. The complex
stress path and extrusion deformation during excavation are the most significant and …

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 …

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 …

A literature review has shown that there exist adequate techniques to obtain ground reaction
curves for tunnels excavated in elastic‐brittle and perfectly plastic materials. However, for …

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 …