西北工程技术学报2025，Vol.24Issue(2)：97-104,8.
宁夏环香山地区地下水水化学特征及其成因分析
Study on Hydrochemical Characteristics and Genesis of Groundwater in the Around Xiangshan Mountain Area of Ningxia
摘要
Abstract
To rationally utilize the groundwater with slight salinity in the Huanxiangshan region,various methods,including the Thiessen polygons,Shukarev classification,Piper curve,correlation analysis,Gibbs diagram,and ion ratio method,were employed to explore the spatial distribution and genesis of groundwater chemical characteristics in this area.The results show that the total dissolved solids(TDS)values of groundwater range from 1,664 to 4,220 mg/L.Sodium ions(Na+)dominate the cations in groundwater,with an average value of 495.73 mg/L,while chloride ions(Cl-)are the primary anions,with an average value of 1,076.44 mg/L.The coefficient of variation of the hydrochemical indicators indicates that the variation coefficient of CO32-is the largest,showing a relatively strong variability,with significant differences in its concentration distribution.The coefficients of variation for HCO3-and pH are relatively small,indicating weaker variability,and the differences in their spatial distribution are not obvious.The TDS distribution shows a decreasing trend from the center of around Xiangshan Mountain towards the periphery,with 68.89%of samples having TDS values between 1,000 and 3,000 mg/L.The hydrochemical types transition from Cl·HCO3·SO4-Na in the north to Cl·SO4-Na·Mg in the south.The dominant influencing factor on the hydrochemical components of groundwater in this area is evaporation concentration,followed by rock weathering.Additionally,the dissolution of salt rocks enriches the groundwater with Mg2+,SO42-,Cl-and Na+.Na+and K+mainly come from the dissolution of salt rocks,and Ca2+and Mg2+mainly come from the dissolution of evaporite and silicate rocks.The impact of evaporite dissolution on the chemical composition of groundwater cannot be overlooked,and cation exchange occurs in the groundwater.关键词
地下水/环香山地区/水化学特性/空间分布特征/成因分析Key words
groundwater/the around Xiangshan Mountain area region/hydrochemical characteristics/spatial distribu-tion/genesis analysis分类
建筑与水利引用本文复制引用
李浩,薛旭,谭军利,马波,杨宗凯,韩庚哲,王西娜..宁夏环香山地区地下水水化学特征及其成因分析[J].西北工程技术学报,2025,24(2):97-104,8.基金项目
宁夏自然科学基金项目(2022AAC02013) （2022AAC02013）
国家自然科学基金项目(52369010) （52369010）
宁夏高等学校一流学科建设(水利工程)项目(NXYLXK2021A03) （水利工程）
国家重点研发计划项目课题(2021YFD1900605) （2021YFD1900605）
