基于变权综合权重的黄金洞尾矿库风险评价

尾矿库的安全运行受很多因素的影响,且影响程度不一,因此在尾矿库的安全评价过程中,确定各因素权重是关键的一步。为了避免固定不变的常权权重对评价结果的影响,构造了均衡函数,引入了变权权重。同时,也为了避免个人主观认识差异及客观数据之间的关系片面性对权重值的影响,提出了基于AHP-熵权法的变权综合权重风险评价方法。在评价过程中,结合实际从洪水漫顶、坝体溃坝、地基沉陷、安全管理、自然因素五方面,选取了坝体高度、库容量等18个措施层指标建立黄金洞尾矿库安全评价指标体系。通过专家打分,得到指标初始值,经过变权综合权重风险评价,得出此尾矿库安全度等级为较安全状态。此方法计算过程简单,为指标权重的确定提供了一条新的途径。

Risk Assessment of Gold Cave Tailings Reservoir Based on Variable Weight Synthesizing Weights

The safe operation of tailings ponds is affected by many factors, with different degrees of influence. Therefore, it is a crucial step to determine the weight of each factor in the process of safety assessment of tailing ponds. In order to avoid the impact of the constant weight on the evaluation results, an equalization function is constructed and variable weights are introduced. At the same time, in order to avoid the influence of personal subjective understanding differences and respective relations between objective data on the weight value, this paper proposes a comprehensive weight risk assessment method based on AHP-entropy method. According to the fact, involving in five aspects of flooding, dam collapse, foundation settlement, safety management and natural factors, the safety assessment of the gold cave tailings reservoir was established in the process of evaluation which is based on 18 measures, such as dam height, reservoir capacity and so on .Through expert scoring, the initial value of the index is obtained. After the comprehensive weight risk assessment of variable weight, the conclusion is drawn that the safety grade of the tailings dam is safer and the calculation process is simple, which provides a new way for the determination of the index weight.