基于变权理论与物元可拓模型的矿井水质识别

Mine Water Quality Evaluation Based on Coupled Variable Weight Theory and Improved Matter-element Extension Model

依据平顶山煤田十一矿提取的井下涌水水样的水质检测结果,文章选取溶解性总固体、总硬度、pH、总碱度、Cl^(-)、SO_(4)^(2-)等6项离子组分作为评价指标,应用变权理论确定了6个评价指标的权重,基于改进的物元可拓模型评价了不同涌水水源的水质。同时使用单因子法和内梅罗指数法与之评价结果进行对比分析,以验证该模型评价结果的准确性。对比发现内梅罗指数法的评价结果高于单因子法和物元可拓法,即该方法的评价结果相对严格。应用改进的物元可拓模型克服了评价指标因子实测值一旦超过节域范围而无法计算关联度的缺陷。研究结果表明,寒武灰岩含水层地下水水质较好,水仓混合水水质次之,顶板砂岩裂隙水和老空水水质较差,改进的物元可拓法评价结果符合实际。研究成果可为丰富水质的评价方法提供支持。

According to the water samples extracted from Pingdingshan No.11 Mine,6 ion components,such as total soluble solids,total hardness,pH,total alkalinity,Cl^(-)、SO_(4)^(2-),were selected as evaluation indexes.The application of variable weight theory to determine the weight of six evaluation indexs,based on the improved matter-element extension model to evaluate the water quality of different gushing water sources.At the same time,single-factor evaluation method and Nemero index method are used to compare and analyze the evaluation results to verify the accuracy of the model evaluation results.The comparison found that the evaluation result of Nemerow index method is higher than that of single factor method and matter element extension method,that is,the evaluation result of this method is relatively strict.The application of the improved matter-element extension model overcomes the defect that the correlation degree cannot be calculated once the measured value of the evaluation index factor exceeds the range of the node domain.The results of the study show that the quality of groundwater in the Cambrian limestone aquifer is better,followed by the quality of mixed water in the silo,and the quality of roof sandstone fissure water and old water is poor.The evaluation results are in line with reality.Expect the research results to provide support for rich water quality evaluation methods.