基于多级灰关联的巴基斯坦阿扎德帕坦坝型优选

Optimization of Pakistan Azad Pattan Dam Type Selection Based on Multiple-stage Grey Correlation

在水利水电工程设计中,坝型选择是一个多因素相互联系、相互制约的复杂系统,传统的选择方式通常主观性太强、客观性不足。为此,运用多级灰关联分析与改进的AHP法相结合的方法进行坝型优选,通过综合分析巴基斯坦阿扎德帕坦实际工程条件,建立起求解最优坝型的多级灰关联综合评价模型,将所考虑的12个影响因素分为3个层次、6个子系统,由下而上进行逐级求解,最终得出碾压混凝土重力坝为最优坝型方案。该方法在汲取改进AHP法优势的同时,又能充分考虑到评价项目的灰色系统特征,克服了传统坝型比选中客观性不足的缺点,得出的评价结果更易被决策者接受。

The dam type selection in the design of water conservancy projects is a complex system with multiple interrelated and mutually constrained factors,and the traditional selection method is usually too subjective and not objective.To this end,the multiple-stage grey correlation analysis and improved AHP method are combined to optimize the dam type selection.Taking Azad Patan Dam Project in Pakistan as a study case,a multiple-stage grey correlation comprehensive evaluation model for selecting the optimal dam type is established,in which,12 influencing factors are divided into three levels and six subsystems.The step-by-step solution of model is carried out and the RCC gravity dam is finally selected as the optimal dam type scheme.While taking the advantage of improved AHP method,the method can fully consider the gray system characteristics of project and overcome the shortcomings of traditional dam type selection.The final evaluation result of model is more easily accepted by decision makers.