南水北调中线明渠工程服役性态综合评价方法

Comprehensive Evaluation Method for Service Performance of Open Channel in Middle Route of South-to-North Water Transfer Project

为实现南水北调中线输水工程的安全运行和长效服役,规避明渠异常状态给整个输水工程的服役性态造成影响,针对明渠工程评价指标的模糊性以及单一评价方法的片面性,利用目标分析法构建了输水明渠工程服役性态评价指标体系,基于可拓理论对传统的层次分析方法进行区间化,提出了改进可拓层次分析模型,用于指标主观权重的确定,与客观权重进行融合,并将模糊综合评价法和灰色聚类评价法进行优势组合,构建输水明渠服役性态的灰色-模糊评价模型。以南水北调中线某明渠工程段为例,应用建立的方法和模型对其进行服役性态评价,评价结果证明了该方法和模型的有效性及实用性,可为南水北调中线明渠工程的运维提供依据。

In order to realize the safe operation and long-term service of South-to-North Water Transfer Project(SNWTP), it is significant to avoid adverse effect led by abnormal state of open channel. Considering the fuzziness of evaluation index and one-sidedness of single method, the evaluation index system of open channel was established with objective analysis method. The improved extension-hierarchical analysis model was proposed to determine the subjective weights based on interval quantization in extension theory, then the subjective and objective weights were combined as fusion weight. The advantages of fuzzy comprehensive evaluation method and grey clustering evaluation method were assembled in order to build the grey-fuzzy evaluation method for open channel. Taking the open channel in the Middle Route of SNWTP as an example, the method and model established in this paper were utilized to evaluate its serviceability and the evaluation results prove their validity and feasibility, which can provide a basis for the operation and maintenance of the open channel projects in the Middle Route of SNWTP.