Abstract: In order to make greater use of the resources in the stope space and improve the economic benefits of the mine，a study on the mining technology of unfavorable geological bodies are carried out for the fixed side slope of the Washan stope at the end of mining. Firstly，the mining technology of damaging geological body is systematically introduced，and the spatial status and resource distribution characteristics of concave stope are introduced. Then，based on the shock absorption blasting technology，the slope multicoupling online monitoring system，the resource comprehensive utilization technology，and the slope eco⁃ logical reconstruction technology，the mining position of the hanging wall mine is determined，and the corresponding mining plan is adopted.Finally，the implementation effect of the technical scheme is demonstrated from both the economic benefits of the mine and the production operation，and the innovation of the mining technology for unfavorable geological bodies is summarized. The research results show that the technical scheme proposed in this paper can not only effectively control the open-pit slope of the stope，but also provide a guarantee for the subsequent comprehensive utilization of the stope space，effectively solve the prob⁃ lem of adverse geological bodies affecting the mining safety，and achieve the production safety at the end of the mining period of washan stope.

Key words: open-pit mines, unfavorable geological body, slope treatment