Abstract: The identification of the spatiotemporal evolution characteristics of mining-induced stress in near-vertical extra-thick coal seams is a key scientific issue in studying strata behavior and rockburst prevention. Taking Wudong Coal Mine as the research background, this study systematically investigates the spatial distribution characteristics of mining-induced stress, the spatiotemporal evolution patterns of microseismic activity, and their coupling mechanism with rockburst occurrence during horizontal sublevel mining in near-vertical extra-thick coal seams through numerical simulations and field monitoring analyses. The reliability of the numerical simulation results is verified using large-scale microseismic monitoring data and five typical rockburst cases. The causes of strata behavior in near-vertical coal seams are discussed, and the fundamental differences in stress distribution patterns, seismic source mechanisms, and rockburst characteristics between near-vertical and horizontal/gently inclined coal seams are quantitatively compared. The results indicate that the mining-induced stress field in near-vertical extra-thick coal seams exhibits a typical three-dimensional asymmetric distribution, with stress concentration zones dominated by horizontal tectonic stress showing distinct stratified and partitioned characteristics. Vertically, a 25 m stress concentration zone is formed below the mining level, with the peak stress located 8 m beneath the seam floor. Along the strike direction, the influence range of the abutment stress extends 60 m ahead of the working face, with a peak at 10 m. Along the dip direction, a pressure-relief zone exists within 35 m on both sides of the roadway, while the upper and lower parts exhibit a double-peak stress concentration pattern. The distribution of microseismic events shows both an advanced and lateral expansion pattern, with microseismic event frequency exhibiting an exponential attenuation trend with increasing energy level. High-energy events are mainly concentrated in high-gradient stress zones 50 to 75 m ahead of the working face and 30 to 40 m on both sides, where energy density is significantly positively correlated with stress gradient. Rockburst manifestations are primarily characterized by roadway roof subsidence and floor heave, with failure patterns strongly associated with the stress concentration zones above and below the roadway. Unlike horizontal coal seams, where vertical stress dominates stress concentration ahead of the working face and on both sides of the roadway, leading to mining-induced seismic disturbances triggered by roof breakage, microseismic events in near-vertical coal seams mainly originate from local coal-rock failure driven by high horizontal tectonic stress. This results in a unique disaster-causing mode of high static load coupled with mining-induced seismic disturbances, where the static load concentration zone and the seismic disturbance zone nearly overlap, leading to rockburst manifestations predominantly characterized by roadway roof and floor failure. The research results provide a scientific basis for clarifying the basic problems of mining pressure behavior and rockburst characteristics in near vertical extra-thick coal seam.