小型水电站引水建筑物模糊综合安全评价

Fuzzy comprehensive safety evaluation of diversion structures at small hydropower stations

针对小型水电站(简称小水电)引水建筑物的特点,根据安全评价指标构建原则,提出由安全性、适用性和耐久性3个子目标及其指标集组成的引水建筑物安全评价体系。为有效挖掘引水建筑物安全评价体系中主、客观评价信息,克服传统赋权法的不足,引入基于指标重要性分值与传递熵相结合的融合权重。在对模糊理论中隶属函数的确定、模糊评价结果的集化等模糊综合安全评价问题分析的基础上,建立小水电引水建筑物模糊综合安全评价模型,设计模糊综合评价流程。实例分析结果表明,小水电引水建筑物模糊综合安全评价方法可行、有效,具有通用性。

According to the characteristics of diversion structures at small hydropower stations,a diversion structure safety assessment system,composed of safety,applicability,and durability indicators,was developed based on the safety evaluation principles.In order to reveal the subjective and objective evaluation factors in the diversion structure and overcome the disadvantages of the conventional weighting method,a coupled weighting method consisting of the index importance value and transference entropy is introduced in this paper.Based on comprehensive analysis of the membership function determination and result evaluation in the fuzzy theory,a safety evaluation model and fuzzy evaluation procedures were established.Application examples show that the safety evaluation method proposed in this study is feasible,effective,and can be widely applied to safety management of small-sized hydropower stations.