哈拉阿拉特山以北中-新生代地下水渗流机制初探  

Preliminary Discussion on Groundwater Seepage Mechanism of the Mesozoic Cenozoic in North of Halarat Mountain

作　　者：张强[1] 唐湘飞[1] 何松 闫晶晶[1] ZHANG Qiang;TANG Xiangfei;HE Song;YAN Jingjing(Geologic Party No.216,CNNC,Urumqi,Xinjiang 830011,China)

机构地区：[1]核工业二一六大队,新疆乌鲁木齐830011

出　　处：《铀矿地质》2024年第3期497-505,共9页Uranium Geology

基　　金：中国核工业地质局项目“新疆准噶尔盆地铀矿资源调查评价与勘查”(编号:202206)资助。

摘　　要：在砂岩型铀矿形成过程中,地下水既是驱动力又是铀元素运移的载体,地下水问题一直制约着砂岩型铀的矿找矿方向。文章以岩心孔渗参数和砂体的沉积规律作为切入点,对新疆哈拉阿拉特山以北地下水渗流机制进行初步探讨,将实验室岩心孔渗分析数据作为约束条件,计算研究区目的层孔隙度和渗透率,结果表明:测井曲线计算的渗透率与岩心分析的渗透率具有较好的吻合关系,孔隙度和渗透率曲线可以表现井中砂岩的连续性变化趋势;通过对6号、9号勘探线钻孔的渗透率梯度变化进行分析,认为渗透率在研究区总体呈现由北东到南西逐渐增高的变化规律,结合研究区的地层的演化规律,划分出3个水文地质单元亚区。此次研究为铀矿找矿工作拓宽了找矿思路,具有重要的参考价值。In the formation process of sandstone-type uranium deposits,groundwater is both a migration driving force and a carrier of uranium.Groundwater problems have always restricted the prospecting direction of sandstone-type uranium deposits.In the view of core porosity and permeability parameters and its the sedimentary pattern,this paper preliminarily discussed the groundwater seepage mechanism in the north of Halarat Mountain in Xinjiang,the laboratory test core porosity and permeability data were used as the constraint condition to calculate the porosity and permeability of the target layer in the research region.The results showed that the permeability calculated by logging curve was in good agreement with the permeability of core analysis,and the porosity and permeability curve presented the continuous change trend of sandstone in the well.Through the analysis of the permeability gradient changes of exploration lines No.6 and No.9,it was considered that the permeability in the research region generally formed a gradual increase from northeast to southwest.Combined with the evolution pattern of the strata in the research region,three hydrogeological unit sub-regions were divided in the study area,which provide important reference to the next uranium exploration.

关 键 词：渗透系数 阿尔奇公式 古地下水 砂岩型铀矿 

分 类 号：P619.14[天文地球—矿床学]