新疆哈密盆地地下水水化学特征及成因分析  

Hydro-geochemical characteristics and genetic analysis of groundwater in Hami basin, Xinjiang

作　　者：吴丁丁 姚震[2] 贾凤超 卫晓锋[1] 孙厚云 毛启贵[1] 谢宁 WU Dingding;YAO Zhen;JIA Fengchao;WEI Xiaofeng;SUN Houyun;MAO Qigui;XIE Ning(Beijing Institute of Geology for Mineral Resources,Beijing 100012,China;Development and Research Center,China Geological Survey,Beijing 100037,China;The First Team of Hydrology&Engineering Geology,Urumqi,Xinjiang 830091,China)

机构地区：[1]北京矿产地质研究院,北京100012 [2]中国地质调查局发展研究中心,北京100037 [3]新疆地矿局第一水文工程地质大队,乌鲁木齐830091

出　　处：《干旱区资源与环境》2020年第7期133-141,共9页Journal of Arid Land Resources and Environment

基　　金：中国地质调查局国家二级项目新疆东天山中段有色金属基地综合地质调查(DD20160071)资助。

摘　　要：哈密盆地是我国西北典型的干旱内陆盆地,具有完整的补给径流排泄系统。为了阐明哈密盆地地下水水文地球化学特征及成因演化规律,采用水化学和稳定同位素D和18O相结合的方法,探讨了该地区地下水化学特征及其形成作用。研究结果表明:哈密盆地地下水化学类型较复杂,呈现出显著的分带性,沿地下水流动方向,地下水化学类型由HCO3-Ca·Na型逐渐过渡为Cl-Na型,TDS含量由每升数百毫克增加到每升数百克,表现出显著的蒸发浓缩现象;哈密盆地地下水的补给来源主要是大气降水,排泄以蒸发为主,岩石风化、溶滤和蒸发浓缩作用对地下水化学组分的形成和演化起主导性作用。The Hami basin is a typical arid inland basin in northwest China.In order to clarify the hydrogeochemical characteristics and genesis and evolution rule of the groundwater in Hami basin,the water hydrochemistry combined with stable isotopes D and 18O were used to explore the chemical characteristics and formation of groundwater in this area.The results of research shows that the chemical types of groundwater in Hami basin are relatively complex and show significant zonation.Along the direction of groundwater flow,the chemical types of groundwater gradually change from HCO3-Ca·Na type to Cl-Na type,and the content of TDS increases from hundreds of milligrams per liter to tens of grams per liter,showing significant evaporation and concentration.The recharge source of groundwater in Hami basin is mainly from atmospheric precipitation,and the discharge is mainly from evaporation.Rock weathering,dissolution and evaporation concentration play primary control functions in the formation and evolution of groundwater chemical components.

关 键 词：地下水 水文地球化学 离子比值 同位素 哈密盆地 

分 类 号：P641.3[天文地球—地质矿产勘探]