基于模糊数学理论和层次分析法,从土石坝所具有的自然属性、社会属性和经济属性出发,充分考虑影响土石坝安全运行的各种因素或指标,给出了土石坝安全性态评价指标、评价原理和方法以及安全指标综合权重矩阵的概念和相应求解方法。经实际工程检测分析表明:采用多层次模糊评判理论进行土石坝安全综合评价是合理、可行的。 Based on the theory of fuzzy mathematics and analytic hierarchy process, starting from the natural, social and economic attributes of earth-rock dams, various factors or indexes that affect the safe operation of earth-rock dams are fully considered, and the evaluation indexes of the safety status of earth- Evaluation principle and method as well as the safety index comprehensive weight matrix concept and the corresponding solution method. The actual engineering analysis shows that it is reasonable and feasible to adopt multi-level fuzzy evaluation theory to evaluate the safety of earth-rock dam.