Strainburst is the most common type of rockbursts. The research of strainburst damage
mechanisms is helpful to improve and optimize the rock support design in the burst-prone
ground. In this study, an improved global-local modeling approach was first adopted to study
strainburst damage mechanisms. The extracted stresses induced by multiple excavations
from a three-dimensional (3D) global model established by fast Lagrangian analysis of
continua in 3 dimensions (FLAC3D) are used as boundary conditions for a two-dimensional …