Upper bound limit analysis of three-dimensional collapse mechanism of shallow buried soil tunnel under pore pressure based on nonlinear Mohr-Coulomb criterion

YU Li, LÜ Cheng, DUAN Ru-yu, WANG Ming-nian,

Rock and Soil Mechanics . 2020, (1): 194 -204 . DOI: 10.16285/j.rsm.2018.2281