The Spatio-Temporal Evolution of Rock Failure Due to Blasting under High Stress

The research aims to investigate the failure characteristics of rock caused by blasting under high stress, explore energy generation and its transfer release in effects blasting. Physical experiments numerical simulations were performed. results showed that, as with AE time-series data, attenuation time activity increases number events, thereby decreasing overall stability samples. In terms spatial evolution, different initial stress fields play a role directional guidance initiation, propagation, coalescence blasting-induced cracks. direction propagation microcracks is consistent maximum principal stress. disturbance high-stress state accelerates extension accompanied occurrence numerous high-energy events. Numerical simulation that exhibits guiding effect on cracks pattern development damage zone, which conclusion physical experiments. provides theoretical for designing optimising parameters deep rock.