泰莱盆地孔隙水水化学特征及其控制因素分析
Analysis of hydrochemical characteristics and controlling factors of porewater in the Tailai Basin
-
摘要: 为了解泰莱盆地孔隙水水化学特征及控制因素,运用数理统计、相关性分析、Piper图、Gibbs图等方法,分析了研究区孔隙水的主要离子及水化学特征,并探讨了其控制因素.结果表明,泰莱盆地孔隙水中主要阳离子为Ca2+、Na+,占阳离子总量的86%以上,而阴离子则以HCO3-、NO3-、SO42-为主,占阴离子总量的85%以上;水化学类型较为复杂,以HCO3·SO4(SO4·HCO3)-Ca·Mg(Ca)为主;pH均值为7.42,其pH变异系数较小,整体呈现弱碱性;研究区TDS均值为866.09 mg·L-1,其北部及南部靠近基岩区的TDS值整体较小,呈现出南、北两侧值低,越向泰莱盆地中部越高的现状.Gibbs图及离子端元图结果表明,水化学组分主要受水-岩作用控制,以硅酸盐岩风化溶解为主且存在碳酸盐岩风化溶解,分析与研究区南、北部基岩裂隙水和岩溶水的补给有关.Abstract: In order to survey chemical characteristics and control factors of pore water in Tailai basin, 40 pore water were sampled in 2017.By means of mathematical statistics, correlation analysis, Piper diagram and Gibbs diagram, main ion and hydrochemical characteristics of porewater were analyzed, and its control factors were discussed. The results showed that Ca2+ and Na+ were the main positive ions in porewater of Tailai basin, accounting for more than 86% of the total positive ions, HCO3-,NO3- and SO42- were the main anions, accounting for more than 85% of the total anions. The types of hydrochemistry were complex and mainly type was HCO3·SO4 (SO4·HCO3)-Ca·Mg (Ca).Mean of pH was 7.42, and variation coefficient was small, belong weak alkalinity. Mean of TDS was 866.09 mg·L-1, in the north and south of the study area near the bedrock area showed low values, and higher in the middle of the Tailai Basin. The hydrochemical components were mainly controlled by water-rock action, mainly by weathering dissolution of silicate rocks and carbonate rocks.
-
Key words:
- Tailai basin /
- porewater /
- hydrochemistry /
- control factors
-
[1] 章光新,邓伟,何岩等.中国东北松嫩平原地下水水化学特征与演变规律[J].水科学进展,2006,17(1):20-28. ZHANG G X, DENG W, HE Y, et al. Hydrochemical characteristics and evolution laws of groundwater in Songnen Plain, Northeast China[J]. Advances in Water Science, 2006,17(1):20-28(in Chinese).
[2] 王晓曦,王文科,王周锋,等.滦河下游河水及沿岸地下水水化学特征及其形成作用[J].水文地质工程地质,2014,41(1):25-33. WANG X X, WANG W K, WANG Z F,et al. Hydrochemical characteristics and formation mechanism of river water and groundwater along the downstream Luanhe River,northeastern China[J]. Hydrogeology & Engineering Geology,2014.41(1):25-33(in Chinese).
[3] CAROL E, KRUSE E, MASPLA J. Hydrochemical and isotopical evidence of ground water salinization processes on the coastal plain of Samborombon Bay, Argentina[J]. Journal of Hydrology,2009, 365(3):335-345. [4] 周俊,吴艳宏.贡嘎山海螺沟水化学主离子特征及其控制因素[J].山地学报,2012,30(3):378-384. ZHOU J, WU Y H. Major ion chemistry of waters in hailuogou catchment and the possible controls[J]. Journal of Mountain Science,2012,30(3):378-384(in Chinese).
[5] 张涛,蔡五田,李颖智,等. 尼洋河流域水化学特征及其控制因素[J].环境科学,2017, 38(11):4537-4545. ZHANG T,CAI W T,LI Y Z, et al. Major ionic features and their possible controls in the water of the Niyang River Basin[J]. Environmental Science,2017, 38(11):4537-4545(in Chinese).
[6] 张艳,吴勇,杨军,等.阆中市思依镇水化学特征及其成因分析[J].环境科学,2015,36(9):3230-3237. ZHANG Y,WU Y, YANG J, et al. Hydrochemical characteristic and reasoning analysis in siyi Town, Langznong City[J]. Environmental Science, 2015,36(9):3230-3237(in Chinese).
[7] 高坛光,康世昌,张强弓,等.青藏高原纳木错流域河水主要离子化学特征及来源[J].环境科学,2008,29(11):3009-3016. GAO T G, KANG S C, ZHANG Q G,et al. Major ionic features and their sources in the Nam Co Basin over the Tibetan Plateau[J]. Environmental Science, 2008,29(11):3009-3016(in Chinese).
[8] 胡春华,童乐,万齐远,等.环鄱阳湖浅层地下水水化学特征的时空变化[J].环境化学,2013,32(6):974-979. HH C H,TONG L,WAN Q Y, et al. Spatial and temporal variation of shallow groundwater chemical characteristics around Poyang Lake[J].Environmental Chemistry,2013,32(6):974-979(in Chinese).
[9] GIBBS R J. Mechanisms controlling world water chemistry[J]. Science,1970,17:1088-1090. [10] 王卓微, 赵新锋, 庞园,等. 流溪河流域地下水水化学时空特征及源辨析[J]. 环境化学, 2017, 36(12):2701-2710. WANG Z W,ZHAO X F,PANG Y,et al.Spatial and seasonal geochemical and stable isotopic characteristics of groundwater associated with flow system and source identification in Liuxi River catchment[J].Environmental Chemistry,2017,36(12):2701-2710(in Chinese).
[11] 卓勇,吴勇,孙为奕,等.贵州威宁草海地区地下水化学特征与控制因素研究[J].科学技术与工程,2016,16(8):59-65. ZHUO Y, WU Y,SUN W Y, et al. Hydrochemistry characteristic and the control factor of groundwater of Caohai Area in Weining County, Guizhou Province[J].Science Technology & Engineering,2016,16(8):59-65(in Chinese).
[12] 曾妍妍,周金龙,贾瑞亮,等.新疆祁漫塔格地区地表水水化学特征及成因分析[J].干旱区资源与环境,2017,31(6):64-70. ZENG Y Y, ZHOU J L, JIA R L, et al. Hydrochemical characteristics and causes of surface water in Qimantage area, Xinjiang[J]. Journal of Arid Land Resources & Environment, 2017,31(6):64-70(in Chinese).
[13] GAILLARDET J, DUPRÉ B, LOUVAT P, et al. Global silicate weathering and CO2,consumption rates deduced from the chemistry of large rivers[J]. Chemical Geology,1999,159(1-4):3-30.
计量
- 文章访问数: 1151
- HTML全文浏览数: 1151
- PDF下载数: 34
- 施引文献: 0