库车坳陷库车组地下水铀成矿水文地球化学初步研究  

Preliminary Study on Hydrogeochemistry of Uranium Mineralization in Groundwater of Kuqa Formation,Kuqa Depression

作　　者：张素强 刘金辉[1] 孙占学[1] 郭强[2] 任满船[3] 王强强[3] 肖菁 曹俊 李书海[3] Zhang Suqiang;Liu Jinhui;Sun Zhanxue;Guo Qiang;Ren Manchuan;Wang Qiangqiang;Xiao Jing;Cao Jun;Li Shuhai(School of Water Resources and Environmental Engineering,East China University of Technology,Nanchang,Jiangxi,330013,China;CNNC Beijing Research Institute of Uranium Geoiogy,Beijing,100029,China;Geologic Party No.216,CNNC,Urumqi,Xinjiang,830011,China)

机构地区：[1]东华理工大学水资源与环境工程学院,江西南昌330013 [2]核工业北京地质研究院,北京100029 [3]核工业二一六大队,新疆乌鲁木齐830011

出　　处：《新疆地质》2025年第1期124-130,共7页Xinjiang Geology

基　　金：核工业北京地质研究院技术研发科研项目(地HTLM2101)资助。

摘　　要：铀矿资源作为重要的战略和能源资源,在国防和经济建设中具有重要作用。在对库车坳陷地质构造、地层与水文地质条件分析基础上,据库车组地下水水化学成分,利用PHREEQC模拟软件对地下水中铀存在形式,铀沉淀饱和指数及溶解沉淀条件进行计算,结果表明:库车组地下水铀存在形式有UO_(2)(CO_(3))_(3)^(4-)和UO_(2)(CO_(3))_(2)^(2-)等,主要为UO_(2)(CO_(3))_(3)^(4-);铀沉淀饱和指数随地下水Eh值的升高而降低,随U浓度的升高而升高;沥青铀矿溶解沉淀边界值随地下水U浓度的升高而上升,随Eh值升高而升高;库车组水样出露点处不会产生沥青铀矿沉淀。As an important strategic and energy resource,uranium mineral resources play an important role in national defense and economic construction.On the basis of the analysis of geological structure,strata and hydrogeological conditions of Kuqa depression,according to the chemical composition of groundwater of Kuqa formation,the existence form of uranium in groundwater,pitchblene saturation index and dissolution and precipitation conditions were calculated by PHREEQC simulation software.The results show that:Uranium exists in the underground water of Kuqa Formation in the form of UO_(2)(CO_(3))_(3)^(4-)and UO_(2)(CO_(3))_(2)^(2-),mainly UO_(2)(CO_(3))_(3)^(4-).The saturation index of pitchblende decreases with the increase of Eh value and increases with the increase of U concentration.The boundary values of pitchblende dissolution and precipitation increase with the increase of groundwater U concentration and Eh value.There is no pitchblende precipitation at the dewpoint of water sample in Kuqa Formation.

关 键 词：铀成矿 水文地球化学 饱和指数 

分 类 号：P619.14[天文地球—矿床学] P592[天文地球—地质学]