泰莱盆地地下水水化学特征及水质评价
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摘要
为分析泰莱盆地地下水水化学特征及水质现状,选取2017年丰水期140件水样,其中,孔隙水样47件、岩溶水样61件和裂隙水样32件,运用数理统计、Piper三线图、箱型图等方法,分析了研究区主要离子及水化学特征,并运用模糊综合评价法、Wilcox图解法评价了水质现状及灌溉水质。结果表明,泰莱盆地主要阳离子为Ca~(2+)、Na~+,占阳离子总数的80%以上,主要阴离子为HCO_3~-、SO_4~(2-),占阴离子总数的67%以上,其中NO3-含量也相对较高;水化学类型以HCO3·SO4-Ca型水为主;pH值整体呈弱碱性,TDS存在孔隙水>岩溶水>裂隙水的关系,这与地下水径流条件有关;Ⅳ、Ⅴ类水样占总水样的29.3%,影响因子为SO_4~(2-)、NO3-、TDS、总硬度,其主要影响因素为人为活动;绝大部分区域均属于好—可用及以上级别,合理利用地下水灌溉可有效预防土壤盐碱化问题。
In order to analyze the hydrochemical characteristics and water quality status of groundwater in the Tailai Basin,47 samples of pore water,61 samples of karst water and 32 samples of fissure water in the wet period of 2017 were selected.By means of mathematical statistics,Piper's three-line chart and box chart,the main ion and hydrochemical characteristics in the study area were analyzed.And then the water quality status and irrigation water quality were evaluated by using Wilcox graphic method and fuzzy comprehensive evaluation.The results show that the main cations in the Tailai Basin are Ca2+,Na+,accounting for more than 80% of the total cations,the main anions are HCO_3~-,SO_4~(2-),accounting for more than 67% of the total anions,of which the content of NO3-is relatively high;The hydrochemical type is mainly HCO3·SO4-Ca water;The pH in the study area is weak alkaline as a whole,and TDS shows a relationship of pore water> karst water>fissure water,which is related to groundwater runoff conditions in the study area;The water samples of type IV and V account for 29.3%of the total water samples,and the influencing factors are SO_4~(2-),NO3-,TDS and total hardness,which are mainly caused by the human activities;Most areas in the study area belong to good-usable and above levels,and rational use of groundwater irrigation can effectively avoid soil salinization in the region.
In order to analyze the hydrochemical characteristics and water quality status of groundwater in the Tailai Basin,47 samples of pore water,61 samples of karst water and 32 samples of fissure water in the wet period of 2017 were selected.By means of mathematical statistics,Piper's three-line chart and box chart,the main ion and hydrochemical characteristics in the study area were analyzed.And then the water quality status and irrigation water quality were evaluated by using Wilcox graphic method and fuzzy comprehensive evaluation.The results show that the main cations in the Tailai Basin are Ca2+,Na+,accounting for more than 80% of the total cations,the main anions are HCO_3~-,SO_4~(2-),accounting for more than 67% of the total anions,of which the content of NO3-is relatively high;The hydrochemical type is mainly HCO3·SO4-Ca water;The pH in the study area is weak alkaline as a whole,and TDS shows a relationship of pore water> karst water>fissure water,which is related to groundwater runoff conditions in the study area;The water samples of type IV and V account for 29.3%of the total water samples,and the influencing factors are SO_4~(2-),NO3-,TDS and total hardness,which are mainly caused by the human activities;Most areas in the study area belong to good-usable and above levels,and rational use of groundwater irrigation can effectively avoid soil salinization in the region.
引文
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[11]刘久潭,高宗军,马媛媛,等.堆龙河河谷平原下游地下水水质变化特征[J].水电能源科学,2018,36(8):39-42.
[12]何锦,范基姣,刘元晴,等.沧州地区微咸水水化学特征及灌溉水质评价[J].人民黄河,2016,38(5):134-138.
[2]王雨山,程旭学,张梦南,等.马莲河下游河水与地下水转化的环境示踪[J].水电能源科学,2018,36(9):48-51.
[3]Wilcox L V.Classification and Use of Irrigation Waters[J].Glycobiology,2002,12(3):229-234(6).
[4]王艳婷,刘彦奎,王东,等.泰安市大汶口石膏矿王庄矿段地质特征及成因分析[J].中国非金属矿工业导刊,2014(5):42-44,62.
[5]耿安凯.山东莱芜张家洼铁矿地质背景及矿床成因分析[J].世界有色金属,2017(9):288-289.
[6]陈应华,蓝廷广,王洪,等.莱芜张家洼铁矿磁铁矿LA-ICP-MS微量元素特征及其对成矿过程的制约[J].地学前缘,2018,25(4):32-49.
[7]张人权,梁杏,靳孟贵,等.水文地质学基础[M].北京:地质出版社,2011.
[8]高宗军,陈晨.基于库尔洛夫式和舒卡列夫分类原则的水化学分类表示方法[J].地下水,2018,40(4):6-11.
[9]GB/T 14848-2017,地下水质量标准[S].北京:中国标准出版社,2017.
[10]汪顺生,黄天元,陈豪,等.基于CRITIC赋权的模糊综合评判模型在水质评价中的应用[J].水电能源科学,2018,36(6):48-51.
[11]刘久潭,高宗军,马媛媛,等.堆龙河河谷平原下游地下水水质变化特征[J].水电能源科学,2018,36(8):39-42.
[12]何锦,范基姣,刘元晴,等.沧州地区微咸水水化学特征及灌溉水质评价[J].人民黄河,2016,38(5):134-138.
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