Mechanism and Prevention and Control of Mine Earthquake in Thick and Hard Rock Strata considering the Horizontal Stress Evolution of Stope

This study investigated the mechanism, prevention measures, and control methods for earthquake disasters typically occurring in mines with thick hard rock strata. A mine stope large faults strata Hebei Province was taken as background object. Then, theoretical analysis numerical simulation were adopted conjunction field monitoring to explore how horizontal stress evolves hanging roofs of such mines, potentially leading mining earthquakes. based on obtained results, a design method proposed reduce levels mitigation. The results showed that, under faults, semiopen semiclosed stopes are formed, which cause influentially pressurized depressurized zones during evolution overburden movements stress. It determined that concentrations mainly originated from release transfer fractures roof areas, calculated using estimation model. formed “counter torques” at both ends strata, prevented support ending due tensile failures. As result, limit spans increased. strategy narrow working faces, strip processes, reasonable speeds, could effectively consequently prevent study’s research successfully applied practices face 16103.