To investigate the acoustic emission characteristics of rockburst caused by stress concentration during excavation in deep-buried chambers under high-stress mining environments, true triaxial tests were performed using the TRW-3000 true triaxial apparatus coupled with the PCI-II acoustic emission monitoring system. Three-way and five-face stress environments with one side of the deep-buried chamber surrounding rocks facing air are simulated by carry -ing out triaxial independent loading and sudden single-sided unloading on marble specimens. The results show that the ringing count and b-value of acoustic emissions effectively reflect the initiation, propagation, and coalescence of inter-nal cracks and voids in the rock. During the pre-failure stage, the ringing count rapidly increases and reaches its peak. while the b-value sharply drops, indicating the rapid expansion of internal voids and cracks into large-scale fractures, leading to severe instability and failure of the specimen. The dense growth of ringing counts can serve as a key indicator of the likelihood of rockburst occurrence in the deep-buried chamber surrounding rocks, while the sudden decrease in the b-value is a precursor to imminent rockburst. These findings provide theoretical guidance for mining practices in deep underground areas.