Jin-feng Zou

TL;DR: In this paper, an improved 3D rotational failure model based on the limit analysis method and an improved wedge-prism model were proposed to better assess the stability of tunnel faces in cohesion-frictional soils.

TL;DR: Wang et al. as discussed by the authors investigated the effect of vertical variability of soil strength on the face stability of a circular tunnel excavated in saturated nonhomogeneous soils by means of the kinematical approach of limit analysis.

TL;DR: In this paper, the authors investigated the roof collapse of deep circular cavities in jointed rock masses using adaptive finite element limit analysis, where the rock mass strength is described by the generalized Hoek-Brown failure criterion.

TL;DR: In this article, a new procedure for the ground response curve (GRC) is investigated in strain-softening surrounding rock for a circular opening, where the plastic region is divided into a finite number of concentric annuli, whose thickness is uniformly determined by a small radius increment.