库岸边坡稳定性的快速评价对工程建设及灾害治理具有重要意义。针对传统综合评价法存在指标权重相对固定的不足，提出了一种基于动态权重的边坡稳定性综合评价方法。首先建立土质岸坡的多层次多指标稳定性评价体系，然后采用简单关联函数和层次分析法分别计算指标客观权重和主观权重，通过主客观综合赋权确定一个随指标取值变化的指标动态权重，最后引入可变模糊集理论提出基于动态权重的土质岸坡稳定性多级可变模糊评价方法。运用该方法分析了三峡库区周家坡滑坡在3种库水位下降速率时的稳定性，并采用极限平衡法验证了评价结果，实证研究表明动态权重法简便实用、科学合理，计算结果比传统的静态权重法更贴近工程实际。

Evaluation of reservoir bank stability is very important in engineering construction and landslide disaster control. In order to avoid the deficiency of the fixed index weights of traditional comprehensive evaluation, a new evaluation method for slope stability based on dynamic weight is proposed. First, the index system and grading criterion for reservoir bank slope are established; second, the index objective weight and subjective weight are calculated by integrating simple relevance  function and analytic hierarchy process(AHP), hence the dynamic synthetic weight, which varies with the index characteristic values, is determined by synthesizing the index objective weight and subjective weight; finally, by introducing the theory of variable fuzzy sets, the evaluation method for reservoir bank stability using multi-level variable fuzzy sets based on dynamic weight is presented. With this method, the stability of Zhoujiapo landslide under three different water level drawdown velocities is evaluated, and the evaluation results are validated by means of limit equilibrium method. The results show that the new method based on dynamic weight is simple and practical, and it gives more reasonable results which correspond to the actual projects than the traditional method does.  