泰莱盆地地下水化学特征及其控制因素
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摘要
为了对泰莱盆地的地下水资源进行合理开发利用,通过现场调查以及测定盆地各类型地下水的水化学成份,初步研究了该区域的地下水化学类型分布特征及其控制因素.结果表明,泰莱盆地各地下水中阳离子以Ca~(2+)和Mg~(2+)为主,阴离子以HCO_3~-和SO_4~(2-)为主,主要水化学类型有HCO_3-Ca型、HCO_3·SO_4-Ca型、HCO_3-Ca·Mg型、HCO_3·SO_4-Ca·Mg型和SO_4-Ca·Mg型,部分地区NO-3较高.研究区地下水中,离子基本以牟汶河为中轴线,由盆地边缘基岩出露区向盆地内部,呈逐渐上升趋势.盆地内地下水中,离子含量主要受水—岩作用的影响,其主要来源是区域内方解石、白云石等碳酸盐岩和石膏等硫酸盐岩的共同溶解.
With the purpose of exploitation development and utilization of the groundwater resource in Tailai Basin,a field investigation and determination of the hydrochemical composition of various types of groundwater in the basin were carried out for primary study on the distribution characteristics and control factors of groundwater chemical types in the area. The results showed that the main cations of various groundwater of Tailai Basin are Ca~(2+) and Mg~(2+),and the main anions are HCO_3~- and SO_4~(2-). The main hydro chemical types are HCO_3-Ca,HCO_3·SO_4-Ca,HCO_3-Ca·Mg,HCO_3·SO_4-Ca·Mg and SO_4-Ca·Mg,with higher NO_3~- in some areas. In the study,ions in the groundwater,basically taking the Muwenhe River as the central axis,show a gradual upward trend from bedrock outcrops on the basin edge to the internal basin. The content of ions in the groundwater of the basin is mainly affected by water-rock interaction, the main sources of which are co-dissolution of carbonate rocks such as calcite and dolomite and sulfate rocks such as gypsum in the area.
With the purpose of exploitation development and utilization of the groundwater resource in Tailai Basin,a field investigation and determination of the hydrochemical composition of various types of groundwater in the basin were carried out for primary study on the distribution characteristics and control factors of groundwater chemical types in the area. The results showed that the main cations of various groundwater of Tailai Basin are Ca~(2+) and Mg~(2+),and the main anions are HCO_3~- and SO_4~(2-). The main hydro chemical types are HCO_3-Ca,HCO_3·SO_4-Ca,HCO_3-Ca·Mg,HCO_3·SO_4-Ca·Mg and SO_4-Ca·Mg,with higher NO_3~- in some areas. In the study,ions in the groundwater,basically taking the Muwenhe River as the central axis,show a gradual upward trend from bedrock outcrops on the basin edge to the internal basin. The content of ions in the groundwater of the basin is mainly affected by water-rock interaction, the main sources of which are co-dissolution of carbonate rocks such as calcite and dolomite and sulfate rocks such as gypsum in the area.
引文
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[2] 高宗军,徐军祥,王世臣,等.济南岩溶水微量元素分布特征及其水文地质意义[J].地学前缘,2014,21(4):135-146.GAO Z J,XU J X,WANG S C,et al.The distribution characteristics and hydrogeological significance of trace elements in karst water,Jinan,China[J].Earth Science Frontiers,2014,21(4):135-146 (in Chinese).
[3] 王滨,贺可强,高宗军.岩溶塌陷发育的时空阶段性分析[J].水文地质工程地质,2001,28(5):24-27.WANG B,HE K Q,GAO Z J.Temporal and spatial analysis of karst collapse development[J].Hydrogeology & Engineering Geology,2011,(5):24-27 (in Chinese).
[4] 高宗军,田红,张春荣.水环境评价概述[J].山东科技大学学报(自然科学版),2007,26(1):20-22,48.GAO Z J,TIAN H,ZHANG C R.Summary of water environmental assessment[J].Journal of Shandong University of Science and Technology (Natural Science),2007,26(1):20-22,48 (in Chinese).
[5] 曹阳,滕彦国,刘昀竺.宁夏吴忠市金积水源地地下水水质影响因素的多元统计分析[J].吉林大学学报(地球科学版),2013,43(1):235-244.CAO Y,TENG Y G,LIU J Z.Multivariate statistical approach to identify influencing factors of groundwater quality in Jinji Water Source of Wuzhong City[J].Journal of Jilin University (Earth Science Edition),2013,43(1):235-244 (in Chinese).
[6] 陈静生,夏星辉,蔡绪贻.川贵地区长江干支流河水主要离子含量变化趋势及分析[J].中国环境科学,1998,18(2):131-135.CHEN J S,XIA X H,CAI X Y.Evolution trend and analysis of major ion contents in the mainstream and some tributaries of Yangtse River in Sichuan and Guizhou Provinces[J].China Environmental Science,1998,18(2):131-135 (in Chinese).
[7] 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.GAO Z J,CHEN C.The classification method of water chemical types based on the principle of Kurllov′s Formula and Shoka Lev classification[J].Ground Water,2018,40(4):6-11 (in Chinese).
[8] 焦艳军,王广才,崔霖峰,等.济源盆地地表水和地下水的水化学及氢、氧同位素特征[J].环境化学,2014,33(6):962-968.JIAO Y J,WANG G C,CUI L F,et al.Characteristics of hydrochemistry and stable hydrogen,oxygen isotopes in surface water and groundwater in Jiyuan Basin[J].Environment Chemistry,2014,33(6):962-968 (in Chinese).
[9] GIBBS R J.Mechanisms controlling world water chemistry[J].Science,1970,170(3962):1088-1090.
[10] KUMAR S K,RAMMOHAN V,SAHAYAM J D,et al.Assessment of groundwater quality and hydrogeochemistry of Manimuktha River basin,Tamil Nadu,India.[J].Environmental Monitoring & Assessment,2009,159(1-4):341-351.
[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 Country,Guizhou Province[J].Science Technology and Engineering,2016,16(8):59-65 (in Chinese).
[12] MARFIA A M,KRISHNAMURTHY R V,ATEKWANA E A,et al.Isotopic and geochemical evolution of ground and surface waters in a karst dominated geological setting:A case study from Belize,Central America[J].Applied Geochemistry,2004,19(6):937-946.
[13] 卓勇.贵州草海地区岩溶地下水化学特征及其指示意义[D].成都:成都理工大学,2017:1-75.ZHUO Y.Chemical characteristics of karst water and its chemical significance in Caohai Area of Guizhou Provence[D].Chengdu:Chengdu University of Technology,2017:1-75 (in Chinese).
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