There are many factors affecting the stability of cut and fill multistage slopes, and these factors exert different degrees of influence on slope stability. The grey incidence analysis method can be used to evaluate the sensitivity of these factors. To overcome the shortcomings of the grey incidence analysis model used in previous sensitivity analysis studies on the factors influencing slope stability, this study improved the dimensionless processing method and resolution coefficient value. Considering that the importance of each influencing factor is different, the vector resemblance degree theory was applied to determine the weight of each influencing factor. Finally, based on an actual cut and fill multistage slope, the sensitivity of the factors affecting stability was analyzed according to the improved grey incidence analysis theory. The results revealed that the unloading platform width, cohesion force, and internal friction angle are most sensitive to the stability of the cut and fill multistage slope. The step height, slope width, and slope height are slightly sensitive, while the soil unit weight, seismic peak acceleration, and slope ratio are the least sensitive.

影响挖填多级边坡稳定性的因素很多，这些因素对边坡稳定性的影响程度不同。灰色关联分析法可用于评估这些因素的敏感性。为了克服以前的敏感性分析研究中用于影响边坡稳定性影响因素的灰色关联分析模型的缺点，本研究改进了无因次处理方法和分辨率系数值。考虑到各个影响因素的重要性不同，应用矢量相似度理论确定各个影响因素的权重。最后，根据实际的挖方和填方多级边坡，根据改进的灰色关联度分析理论，分析了影响稳定性的因素的敏感性。结果表明，卸荷平台的宽度，内聚力和内摩擦角对挖方和填方多级边坡的稳定性最敏感。台阶高度，坡度宽度和坡度高度稍有敏感，而土壤单位重量，地震峰值加速度和坡度比最不敏感。