优化混合交叉赋权-联系云模型的水质评价方法  

Water Quality Evaluation Method of Optimized Hybrid Cross Weighting-Contact Cloud Coupling Model

作　　者：李科 康小兵[1] 杨四福 LI Ke;KANG Xiaobing;YANG Sifu(State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,College of Environment and Civil Engineering,Chengdu University of Technology,Chengdu 610059,China)

机构地区：[1]成都理工大学环境与土木工程学院地质灾害防治与地质环境保护国家重点实验室(成都理工大学),四川成都610059

出　　处：《环境科学与技术》2020年第10期70-76,共7页Environmental Science & Technology

基　　金：四川矿产资源研究中心科研课题:基于生态文明建设的四川省铁矿尾矿资源综合利用研究(SCKCZY2018-YB004);地质灾害防治与地质环境保护国家重点实验室自由探索课题资助项目(SKLGP2013Z003)。

摘　　要：水质评价的结果受到指标权重和指标等级隶属度计算结果的直接影响。该文针对目前传统计算模式下的融合权重和隶属度耦合的不足,提出一种优化混合交叉赋权-联系云耦合模型。模型对混合交叉赋权进行优化得出水质指标权重,再基于联系数定量化评价指标并通过联系云构建评价矩阵,进而进行权重矩阵与联系云矩阵的耦合并得到水质评价结果。应用该模型对安宁河中游太和段地下水质量进行评价,并分别与改变权重和隶属度的计算模式下所得评价结果进行对比分析,结果表明优化混合交叉赋权所得权重提高了指标权重分配的准确性,联系云的计算扩展了指标在不同等级隶属度的分布区域,克服了评价过程中评价等级的模糊性,二者的耦合模型所得评价结果符合评价区实际水质状况,验证了该模型的可靠性,可为今后地下水质量评价提供一种新的方法。Results of water quality assessment are directly affected by the index weights and the calculation results of the index level membership.Aiming at the deficiency of fusion weight and membership degree in the traditional computing mode,an optimized hybrid cross weight-contact cloud coupling model is proposed.The model optimizes the hybrid cross-weighting to obtain the weight of the water quality index,and then based on the quantitative evaluation index of the contact number to construct the evaluation matrix through the contact cloud,and finally the weight matrix and the contact cloud matrix is by coupling to obtain the water quality evaluation result.The model is used to evaluate the groundwater quality of the Taihe section at the middle reaches of Anning River,and the results are compared with the evaluation results of the change weight and membership degree.The analysis shows that the optimized hybrid cross-weighting weights improve the accuracy of the index weight distribution.The calculation of the contact cloud expands the distribution area of the index at different levels of membership,and overcomes the ambiguity of the evaluation level in the evaluation process.The evaluation results of the coupled model are in accordance with the actual water quality of the evaluation area,which verifies the reliability of the model.The new model can provide a new method for groundwater quality assessment in the future.

关 键 词：水质评价 混合交叉赋权 联系云 耦合模型 安宁河中游 

分 类 号：X824[环境科学与工程—环境工程]