摘要
为了分析各种密切值法的特点,选择最佳的地下水水质评价方法,叙述了传统密切值法、改进的密切值法、基于熵权改进的密切值法、基于熵权的密切值法的方法原理,并以内蒙古东胜煤田阿不亥普查区的地下水水质综合评价为例,用上述各种密切值法进行地下水水质评价,将评价结果与模糊数学法的评价结果进行对比,分析各种评价结果的合理性。结果发现:当各水样的检测值差别相对较大时,采用目标差值率法对初始环境矩阵规范化处理,会过分夸大该指标在水质评价中的作用,所以改进的密切值法和基于熵权改进的密切值法在这种情况下评价结果很不理想。运用信息熵原理确定各指标的权重,综合考虑了各种信息,弥补了传统的密切值法的缺点,基于熵权的密切值法是各种密切值法中最合理的评价方法。
In order to analyze the characteristics of a variety of osculating value methods, described the principle of traditional osculating value methods, improved osculating value methods, improved osculating value methods based on entropy weight and osculating value methods based on entropy weight. And took the water quality assessment of Dongsheng coalfield investigation area in Inner Mongolia as an example, compared the results with the results of fuzzy comprehensive evaluation method, analyzed their rationality and found that： standardization of initial matrix with object difference rate method would magnify the function of the evaluating indicator when the experimental values varied widely. So the evaluation results of improved osculating value methods and improved osculating value methods based on entropy weight were not ideal. Traditional osculating value method＇ s results have a certain margin of error, while osculating value methods based on entronv weight which is the most reasonable method got the more accurate and reasonable results.
出处
《水利科技与经济》
2010年第5期481-483,共3页
Water Conservancy Science and Technology and Economy
基金
中央地质勘查基金煤炭试点项目(2007150004)
关键词
水质评价
传统密切值法
改进的密切值
基于熵权改进的密切值法
基于熵权的密切值法
water quality assessment
traditional osculating value methods
improved osculating value methods
improved osculating value methods based on entropy weight
osculating vatue methods based on entropy weight
