摘要
近几十年来,随着地下水的过量开采,清水河平原地下水水质恶化现象进一步加剧.为查明现状条件下清水河上游平原地下水水化学系统特征与演变规律,综合运用描述性统计分析、相关性分析、Piper三线图示法、矿物饱和指数及离子空间变化特征分析等方法对地下水化学成分进行分析.结果表明:Na+、SO42-是地下水的主要离子,南部山前及中部清水河以西倾斜平原地下水水质较好,西南部山前及清水河以东水质较差;地下水水化学成分主要受补给水源水化学特征、混合作用以及阳离子交换作用控制;西南部山前倾斜平原高矿化地下水及高矿化地表水是引起清水河平原地下水苦咸水广泛分布的主要原因.为清水河平原乃至西部矿区水资源可持续开发利用提供科学依据.
In recent decades, with the overexploitation of groundwater in Qingshuihe Plain, the phenomenon of water quality deterioration has been intensified. To find out the hydrochemistry characteristics and the evolution laws of groundwater in the upstream of Qingshuihe Plain under current situation, the descriptive statistics, correlation analysis, Piper diagram, saturation index of minerals, and research of spatial features of ions were used to analyze the composition of groundwater chemical composition. The results show that Na+and SO42-are major ions in groundwater, the groundwater quality is better in inclined plain in the southern piedmont and in the middle of the west of Qingshuihe River; groundwater chemical composition is mainly controlled by the chemical characteristics of water source, mixture function and ion exchange function. The widely distribution of brackish water in Qingshuihe Plain is mainly caused by the high mineralized groundwater and surface water in the southwestern inclined piedmont plain, which provides a scientific basis for the sustainable exploitation of water resources in Qingshuihe Plain and the western mining area.
出处
《宁夏工程技术》
CAS
2014年第4期289-294,共6页
Ningxia Engineering Technology
基金
国土资源部公益性行业科研专项经费项目资助(201111006)
关键词
地下水
水化学特征
演变规律
清水河平原
groundwater
hydrochemical characteristics
evolvement rule
Qingshuihe plain
