Abstract: A numerical model of circular chambers under high in-situ stress was established using FLAC3D software to investigate the influence of in-situ stress environment on rock-burst characteristics in deep-buried chambers.An empirical formula for the limit energy storage value of hard rock was developed based on the experimental data of hard rock under a certain confining pressure state.The influence of different in-situ stress environments on rockburst was studied considering the ratio of rock stress to strength and the index and criteria of rock-burst of elastic deformation energy.The results showed that the risk of rock-burst and the corresponding intensity of rock-burst were affected by in-situ stress environment.Specifically,rock-burst may occur on both sides of chambers when the lateral pressure coefficient λ was lower than 1.00.The value of rock-burst discrimination indexes decreased with the lateral pressure coefficient,and the risk of rock-burst in chambers reduced in this case.Rock-burst may occur at the top and bottom of chambers when the lateral pressure coefficient λ was higher than 1.00,and the value of rock-burst identification indexes increased with the lateral pressure coefficient,which increased the rock-burst risk in chambers.