熵权法在煤矿区地表水环境质量评价中的应用
2021-07-25陈晨桂和荣梅静梁陈家玉李晨王春雷
陈晨 桂和荣 梅静梁 陈家玉 李晨 王春雷



摘 要:为了研究煤矿开采对地表水环境质量的影响,以芦岭矿区5个塌陷塘(1#、2#、3#、4#、5#)以及流經矿区的沱河为研究对象,选取氨氮、总氮、总磷、化学需氧量、氟化物、硝酸盐、硫酸盐为评价指标,运用熵权法对矿区内地表水体进行了水环境质量评价。结果表明:沱河Ⅳ类水占100%;4#塌陷塘水质最好,可以作为生活用水;2#塌陷塘水质最差,有3个水样超过Ⅴ类标准;1#及5#塌陷塘为Ⅳ类水,3#塌陷塘为Ⅴ类水。总体上看,处于流动状态的沱河水质优于静水环境下的塌陷塘。
关键词:熵权法;地表水;环境质量评价;芦岭矿区
中图分类号 X832文献标识码 A文章编号 1007-7731(2021)12-0124-04
Application of Entropy Weight Method in Environmental Quality Assessment of Surface Water in Coal Mine Affected Area
CHEN Chen1,2 et al.
(1School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China; 2National Engineering Research Center of Coal Mine Water Hazard Controlling(Suzhou University), Suzhou 234000, China)
Abstract: In order to study the environmental quality of surface water in coal mining affected area, this paper takes five collapse ponds (1#, 2#, 3#, 4#, 5#) in Luling mining area and Tuohe river flowing through the mining area as the research object, selects ammonia nitrogen, total nitrogen, total phosphorus, chemical oxygen demand, fluoride, nitrate, sulfate as evaluation indexes, and uses entropy weight method to evaluate the water environmental quality of surface water in the mining area.The results show that: Tuohe River class IV water accounts for 100%; the water quality of No.4 collapse pond is the best, which can be used as domestic water; the water quality of No.2 collapse pond is the worst, with three water samples exceeding class V standard; No.1 and No.5 collapse pond is class IV water, and No.3 collapse pond is class V water.Generally speaking, the water quality of Tuohe River in flowing state is better than that of collapse pond in still water environment.
Key words: Entropy weight method; surface water; Environmental quality assessment; Luling mining area
近年来,由于工农业“三废”的不合理处置,导致局部区域水体水质恶化,甚至发生水污染事件频繁事件,严重影响人们的身体健康[1]。因此,水环境质量评价受到了学界的广泛关注[2]。中国是世界上最大的煤炭生产国与消费国,煤炭资源开采与利用在国民经济发展中占有重要地位[1]。大规模的煤矿开采,在地表形成了大量的塌陷水域(简称“塌陷塘”),构成了矿区水资源的重要的组成部分[5]。矿区塌陷塘与地表河流是矿区内工业生产、农业灌溉以及居民生活饮用重要的供水水源[3]。采用科学的方法合理评价矿区水环境质量,对于矿区水资源保护与开发利用具有重要意义。
目前,国内外水质评价方法有很多,包括指数评价法、模糊评价法、单因子评价法、灰色评价法等[8]。这些评价方法的特点是评价标准权重的确定具有主观性。……
