关键词: 大型露天矿, 边坡靠界, 爆破振动, 边坡稳定性, 道路优化改置

Abstract: A large open-pit mine is affected by blasting vibration，the progress of the northern slope of the stope is lagging behind，the eastern orchard is difficult to move，and the slope stability is poor. There are many ore bodies pressed by the rock in the stope，and the deep ore resources cannot be effective⁃ ly released. In order to further reduce the damage of blasting vibration to the slope，improve the ore supply capacity of the stope and ensure the safe production，the numerical simulation of the pre-splitting hole vi⁃ bration reduction of the slope and the implementation of various slope corner boundary blasting technical schemes are carried out. The regional blasting vibration is effectively reduced and the blasting effect is im⁃ proved. By accelerating the advancement of the open-pit slope boundary of the stope，favorable conditions are created for multi-bench simultaneous operation. The optimization and relocation of the roads in the east and west sides of the stope are carried out，and the layout and slope optimization of the roads in the stope are realized. Some roads are permanently finalized，releasing a lot of working space for the production of the stope.Through the optimization and improvement of the above series of technologies, the production sta⁃ bility of the short-term ore supply in the footwall of the stope and the optimized production of the east and west sides is guaranteed, which further provides a choice space for the rational ore blending of the stope and creates favorable conditions for the optimizing production layout of the mine stope.

Key words: large open-pit mine, slope near the mining boundary, blasting vibration, slope stability, road optimization relocation