以湖南省湘潭～邵阳高速公路部分标段路基下伏岩溶勘查资料为基础 ,采用多级模糊评判理论与系统层次分析方法 (AHP) ,建立了潭邵高速公路路基下伏岩溶稳定性的综合评判模型 ,并对其进行了二级模糊综合评判 ,其评判结果较准确地反映了这些标段岩溶的稳定程度。该工程实践也证明了此评判方法的可行性和可靠性 ,为高速公路岩溶区路基稳定性评价提供了可行的思路和方法 ,具有广泛的工程与学术价值 Based on the underlying karst exploration data of submarine sections of Xiangtan-Shaoyang Expressway in Hunan Province, a multi-level fuzzy evaluation theory and system-level analysis method (AHP) were used to establish a comprehensive evaluation of the sub-karst stability of Tan-Shao expressway subgrade Model, and carried out a second-level fuzzy comprehensive evaluation, the evaluation results more accurately reflect the stability of these sections of the karst. The engineering practice also proves the feasibility and reliability of this method and provides feasible ideas and methods for evaluating the stability of subgrade in expressway karst area. It has a wide range of engineering and academic values