西北水电Issue(5)：14-19,6.DOI:10.3969/j.issn.1006-2610.2016.05.004
基于证据理论和可变模糊集的地下水环境风险评价
Risk Assessment of Underground Water Environment Based on Evidence Theory and Variable Fuzzy Sets
摘要
Abstract
It is difficult to assess the underground water environment risk because of high dimensionality and uncertainty of the underground water system. To improve assessment accuracy and rationality and realize the scientific management of underground water, DS evidence theory is applied in the risk assessment of the underground water environment in the paper. Meanwhile, the variable fuzzy sets theory is utilized to construct the distribution of basic belief of the evidence theory, realizing modeling with objective and rational evidence. Finally, the typical combination principle is utilized to perform the evidence combination. With the case of surrounding area of Xinier reservoir, the belief range is [0,0. 33], the likelihood range is [0,0. 35] and the uncertainty is 0. 02 when the risk of the underground water environment is at medium. Based on the judgment rules, the risk degree of the underground water environment of the studied region is at medium. The study presents that this method enables to incorporate data of all aspects of the underground water environment as well as to handle uncertainty in risk as-sessment, realizing the accurate assessment of the risks of the underground water environment.关键词
地下水环境/证据理论/可变模糊集/风险评价/希尼尔水库Key words
underground water environment/evidence theory/variable fuzzy sets/risk assessment/Xinier reservoir分类
建筑与水利引用本文复制引用
魏光辉..基于证据理论和可变模糊集的地下水环境风险评价[J].西北水电,2016,(5):14-19,6.基金项目
水利部公益性行业科研专项经费资助(201501059) （201501059）
