Based on the characteristics of the crossfeed surface between the concrete dam body and foundation,the evaluation index and classification model for the crossfeed surface are established by using the dominant surface theory.

• 基于混凝土坝坝体与坝基互馈作用面的特性；运用优势面理论建立了坝体与坝基互馈优势面的评价指标和分类模型.