Open-pit mining is mostly carried out in large-scale mines,which leads to the destruction of the original terrains and landscapes in the mining area and occupies a large quantity of land resources,which may trigger geologi-cal disasters.Taking the Bachagou Mine in Inner Mongolia as an example,through the analysis of engineering geology and hydrogeological conditions in the slope area,the main landslide modes of the slope are determined to be planar failure,arc-shaped failure,wedge-shaped failure,dumping failure,and collapse failure.A technical scheme of slope unconsolidated body and debris removal,passive mesh demolition,prestressed bolt,bolt,frame beam,shotcrete-bolt-mesh,drainage holes,and curtain grouting is proposed for implementation and treatment.Practice has proved that this treatment technology is advanced and proactive,with small investment and good results,greatly saving infrastructure costs,providing technical support for mine safety production,ensuring the safety of platform workers and vehicle equipment,and ensuring the smooth operation of open-pit mining projects.