Abstract:It is mainly mined out No. 7-2 vein at a gold mine, the joint and fissure of orebody and surrounding rock is developed, and the depth of the orebody is more than 500 meters. Under the condition of great ground stress, the surrounding rock is easy to caving under the influence of mining. When the shallow resource of the mine was mined by the subsequent filling mining method, the rock formations were difficult to control, high loss rate of high grade ore was caused by the designed pillar, and the dilution rate of caving rock mixed with ore was high. In order to solve the above problems, the mining method is changed to sublevel caving without sill pillar when mining deep resources, and the different stoping sequence has great influence on the stress of the adjacent mining path, in order to improve the safety of drilling in mining route and drawing operation, the relationship between the stoping sequence and the stability of mining route needs to be further explored. Combined with the actual stoping sequence of the five mining routes, numerical simulation of FLAC3D is used to analyze the stress of mining route under various stoping sequence conditions. The result shows that when using double-wing step stoping method, the stress distribution of surrounding rock in mining route is more uniform, the mining route can maintain stability in a certain period of time, and the safety of operation in mining route can be greatly improved.