基于熵权的改进可拓评价方法在地下水水质评价中的应用  

Application of the Improved Extension Evaluation Method Based on Entropy Weight in Groundwater Quality Evaluation

作　　者：于丹[1] 张搏[1] 许春东 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]辽宁有色勘察研究院,辽宁沈阳110000

出　　处：《沈阳建筑大学学报（自然科学版）》2017年第1期127-133,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(50479024);陕西省教育厅专项科研计划项目(04JK233)

摘　　要：目的构建应用于地下水水质评价的熵权改进可拓评价模型,并验证模型的可行性.方法将熵权理论和非对称贴进度原则引入到传统可拓评价方法当中,建立基于熵权的改进可拓评价模型.同时,将模型应用到矿区地下水水质评价实例当中,并且与采用TOPSIS法运用相同数据所得评价结果进行对比,以验证评价结果的准确性和模型的可行性.结果基于熵权的改进可拓方法所得的评价结果显示;区域内各个采样点地下水水质均处于II类与III类水之间,倾向于III类水,与绝对隶属原则判定结果完全一致,同时,评价结果与TOPSIS方法所得结果基本一致.结论研究区地下水水质为III类水,评价结果对比一致也印证了将基于熵权的改进可拓评价方法运用到地下水水质评价中完全可行,是较为理想的地下水水质评价模型.Construct an improved extension evaluation model of entropy weight to evaluation of groundwater quality, and verify the feasibility of the model. Entropy weight theory and asymmetric progress principle were applied to the extension evaluation method to establish a improved evaluation model of objective element extension based on entropy weight. The model is applied to the evaluation instance of groundwater quality and evaluation result acquired by adapting osculating value method that using the same data is compared and analyzed. The evaluation results of the improved extension method based on the entropy weight are presented;The groundwater quality of each sampling point in the mining area is between Class Ⅱ and Ⅲ, tend to class Ⅲ water, And absolute determination of the principle of subordination completely consistent, at the same time, the results are in accordance with the TOPSIS method. Groundwater quality in the study area is Grade Ⅲ, the consistency of the comparison results also confirms that it is feasible to apply the improved extension evaluation method based on entropy weight to the groundwater quality evaluation, which is a ideal evaluation mode of groundwater quality.

关 键 词：水质 可拓评价 熵权 贴近度 

分 类 号：X-523[环境科学与工程]