关键词: 深部开采, 破碎矿体, 采矿方法, 高压灌浆, 数值模拟

Abstract: In view of the special geological conditions of deep inclined broken orebody in Sanshandao Gold Mine,a comprehensive mining technique is proposed,which includes the stage open stope and subsequent filling and secondary high-pressure grouting prestressed anchorage support,and the basic principle of hanging wall pre-reinforcement treatment is analyzed. The numerical simulation of stress,displacement and plastic zone of broken orebody mining is carried out,then,the rationality of stage open stope and subsequent filling mining method and the feasibility of hanging wall pre-reinforcement treatment are analyzed. The study results show that the stage open stope and subsequent filling mining method with hanging wall pre-reinforcement can effectively reduce the deformation of the surrounding rock of the side wall of the deep stope,and control the loss rate of the stope to 9. 7% and the dilution rate to 7. 8%. It can ensure the safe and efficient mining of deep broken orebody in Sanshandao Gold Mine,and provide a theoretical basis for the efficient mining of similar mines.