摘要
内蒙古托克托县地下水普遍高氟、高盐,大部分不适合长期饮用,而位于县城西南的"神泉",却因优良的水质成为该区域人民生活的主要水源。为了探寻"神泉"水的来源及其与周边地下水化学特征不同的原因,通过收集水文地质资料、实地踏勘及取样分析的基础上,利用Piper三线图法、Durov图法、地下水流动系统分析等方法对该泉水以及周边地下水进行对比分析并追溯其来源。结果表明:(1)"神泉"虽处于托克托县境内冲湖积平原排泄区并紧邻黄河,但其水质低氟高锶(HCO3-Ca型水)与黄河水(Cl-Na型水)及周边地下水(高氟、高TDS)有本质的不同。(2)"神泉"水与黄河水及周边地下水无明显的水力联系,其主要是由库布齐沙漠区地下水通过鄂尔多斯北缘断层,经由黄河河床淤泥下伏断裂通道补给形成,属于典型的断层泉。
The groundwater in Tuoketuo County,Inner Mongolia,is generally high in F-and salt,most of which are not suitable for long-term drinking.However,"Shenquan,"located in the southwest of the county,has become the main source of water for the local people because of its excellent water quality.In order to explore the source of"Shenquan"water and the reason why it is different from the surrounding groundwater in chemical characteristics,based on the collection of hydrogeological data,field survey,and sampling analysis,this paper uses the Piper trilinear diagram,Durov diagram,analysis of groundwater flow system,and other methods to make comparatively analyze the spring and surrounding groundwater and trace the source of"Shenquan."The results show that(1)although"Shenquan"is located in the discharge area of an alluvial-lacustrine plain in Tuoketuo county and close to the Yellow River,there are essential differences between"Shenquan"water(HCO3-Ca)with low F-and high Sr and Yellow River water(Cl-Na)and surrounding groundwater(high F-and high TDS).(2)"Shenquan"water has no apparent hydraulic connection with the water of the Yellow River and the surrounding groundwater.It is mainly formed by the groundwater in the Kubuqi desert area through the fault on the north edge of Ordos and through the fault channel under the silt of the Yellow river bed.It belongs to a typical fault spring.
作者
王磊
董少刚
王雪欣
王超
李政葵
WANG Lei;DONG Shao-gang;WANG Xue-xin;WANG Chao;LI Zheng-kui(School of Ecology and Environment,Inner Mongolia University,Key Laboratory of river and lake ecology in Inner Mongolia,Hohhot 010021,Inner Mongolia,China)
出处
《干旱区研究》
CSCD
北大核心
2020年第5期1140-1147,共8页
Arid Zone Research
基金
内蒙古自治区自然科学基金项目(2018MS04004)
内蒙古“一湖两海”科技重大专项项目
国家自然科学基金项目(41562020)共同资助
关键词
神泉
断层
地下水
水文地球化学
托克托县
内蒙古
Shenquan
fault
groundwater
hydrogeochemistry
Tuoketuo County
Inner Mongolia
