Abstract: In order to ensure the safe,efficient and economic exploitation of deep resources，taking the deep 105 orebody from a certain mining company in Guangxi as research object，investigation on pressure relief mining for a potential stress induced disaster in the process of large scale mining of deep 105 orebody was carried out.According to the rock bursting of the deep 105 orebody and surrounding rock in the mining area,combining technical conditions and mining process,stress level and rock mass mechanics parameters in mining area,four kinds of pressure relief schemes are put forward,and the pressure relief effect of four schemes is simulated and analyzed by using FLAC3D and Plot Digitizer software.The results show that：arrangement of relief groove on both sides of the stope reduces stope surrounding stress by 14.8%；arrangement of relief groove on roof and floor of the stope is failure；deep-hole pressure release blasting in hanging wall of the stope reduces stope surrounding stress by 50.4%,so there is an effective stress buffer zone formed between ore-body and surrounding rock；An ore block sub-step mining reduces stope surrounding stress by 63.6%.Finally,the optimal scheme of the ore block sub-step mining is determined after comparing and analyzing the maximum principal stress.

Key words: Pressure relief mining, Rock burst, Pressure relief way, Numerical Simulation