Failure mechanism analysis of rock in particle discrete element method simulation based on moment tensors

Acoustic emission (AE) and moment tensor simulation with discrete element method (DEM) have been proven to be an effective method to analyse the failure mechanism of rock. The ratio (R) of isotropic and deviatoric components of moment tensor is often used to distinguish the failure mechanism of AE events. However, the critical value of R to distinguish different failure mechanism has not been strictly verified, and the method to evaluate the...