Abstract: To address the issue of local instability in the mine slope，taking a certain open-pit mine slope as the research object，a technique of basalt fiber anchor rods for slope support is proposed to en⁃ hance the stability of the slope. Firstly，the finite element model of the slope is established using the Mi⁃ das-GTS software，and the stability of the slope was analyzed. Secondly，based on the variation law of the slope safety factor，the optimization of the basalt fiber anchor rod-supported slope is carried out，and the op⁃ timal support parameters were obtained. Finally，the stability of the slope after support with the optimal sup⁃ port parameters was analyzed. The results show that the original slope was in an unstable state，with the max⁃ imum combined displacement being 4.69×10-3 m，the maximum shear strain being 1.87×10-3 ，and the safety factor being 1.10，which does not meet the requirements of the specifications. The optimal support parame⁃ ters determined through optimization for basalt fiber anchor rods are spacing 2.5 m，row spacing 3 m，incli⁃ nation angle 25°，length 6 m，and diameter 24 mm；after support with the optimal support parameters， the stability of the slope has significantly improved，with the maximum combined displacement reduced to 4.65×10-5 m，the maximum shear strain reduced to 9.43×10-6 ，and the safety factor increased to 1.45， meeting the requirements of the specifications. The research results not only verify the applicability of ba⁃ salt fiber anchor rods in slope engineering，but also provide scientific basis and technical support for the stability analysis，support design，and construction of similar types of mine slope projects.

Key words: rock slope, stability analysis, basalt fiber anchor rod, optimized support parameters