银川地区承压水水化学特征及控制因素

银川平原属中温带干旱区,蒸发强烈,潜水水质差,承压水是银川市地下水开采的主要水源。通过ArcMap空间分析、传统作图分析、氢氧同位素分析等方法,分析银川地区承压含水层水化学特征及各含水层水化学特征的差异,探讨了承压水水化学分布特征的控制因素。研究表明,潜水和承压水水化学分布特征在水平和垂直方向上均存在较大差异;第一和第二承压水水化学分布特征在水平方向上相似,在垂直方向上存在一定差异。水平方向上,两层承压水水化学特征存在一定分带性,而潜水无明显规律性。两层承压水在靠近西侧补给区溶解性总固体(TDS)较小,阴离子以HCO3-为主,阳离子以Mg2+和Ca2+为主,向东溶解性总固体逐渐增加,在银川断裂...

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Volume: 44
Main Author: 李志红 胡伏生 周文生 赵志鹏 王广才 史浙明
Format: Journal Article
Language: Chinese
Place of publication: 2017
published in: 水文地质工程地质 Vol. 44; no. 2; pp. 31 - 39
Data of publication: 2017
ISSN: 1000-3665
Alternate Title: Hydrogeochemical characteristics and controlling factors of confined water in Yinchuan
Bibliography: 11-2202/P
The strong evaporation have made the unconfined water have poor quality in Yinchuan plain,the middle temperate arid region. Confined water is the main water source for the mining of groundwater in Yinchuan City. Spatial analysis of Arc Map,conventional graphical methods,stable isotopic were used to analyze the distribution characteristics of confined water chemistry,and the difference among different aquifers. Then the controlling factors of confined water chemistry were discussed. The results show that the hydrochemicalcharacteristics of unconfined water are significantly different with the two confined water in horizontal and vertical direction. The first and the second confined water have similar changing trends in the horizontal direction,but certain difference exist between them in the vertical direction. In the horizontal direction,the confined water near the west side recharge area has small TDS with the main anion of HCO3-,and the main cation of Mg2+and Ca2+. The TDS increase eastwards. Aroun
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