基于PCA-Topsis法的水库坝型评价模型——以晓龙沟水库为例

Evaluation Model of Dam Type based on PCA-Topsis Method:A case study of Xiaolonggou Reservoir

建立科学有效的水库坝型评价模型,对水库工程建设具有重要的指导意义。本研究以青海省晓龙沟水库为研究对象,选取主体工程量、工程投资、环境保护、施工难度和大坝性能等5类制约水库大坝坝型选择13个指标因素,基于PCA-Topsis评价模型建立大坝坝型综合评价模型。结果表明:建立的PCA-Topsis坝型评价模型具有较好的区分度,能够较为科学准确地评价复合土工膜堆石坝、沥青混凝土心墙堆石坝、混凝土面板堆石坝和堆石混凝土重力坝的特点,其计算简便可行,评价结果准确符合实际。本模型可为坝型选择决策过程提供优化,研究成果可为水库建设过程中坝型选定决策提供参考。

The establishment of a scientific and effective evaluation model of reservoir dam type is of important guiding significance for the construction of reservoir project.In this study,Xiaolonggou Reservoir in Qinghai Province is selected as the research object,and 13 index factors are selected to restrain the dam type selection in 5 categories,such as the main engineering quantity,project investment,environmental protection,construction difficulty and dam performance.Based on the PCA-Topsis evaluation model,the comprehensive evaluation model of dam type is established.The results show that the established PCA-Topsis dam type evaluation model has a good degree of differentiation,which can scientifically and accurately evaluate the characteristics of composite geomembrane rockfill dam,asphalt concrete core rockfill dam,concrete face rockfill dam and rockfill gravity dam.The calculation is simple and feasible,and the evaluation results are accurate and realistic.This model can provide optimization for decision-making process during dam type selection and the study results can provide reference for dam type selection decision-making in the process of reservoir construction.