地-井式激电测量在向阳坪铀矿床中的应用研究  

Application of Surface-borehole Induced Polarization Survey in Xiangyangping Uranium Deposit

作　　者：陈峰[1] CHEN Feng(Changsha Uranium Geology Research Institute, CNNC,Changsha 410007, China)

机构地区：[1]核工业二三〇研究所,湖南长沙410007

出　　处：《东华理工大学学报（自然科学版）》2022年第3期261-268,共8页Journal of East China University of Technology(Natural Science)

基　　金：中国核工业地质局地勘项目“广西资源县苗儿山地区铀矿资源调查评价与勘查”(201917)。

摘　　要：以向阳坪铀矿床为研究对象,通过开展地井式激电测量来探索激电异常与铀成矿有利的黄铁矿、赤铁矿蚀变之间的关系,并结合向阳坪铀矿床的铀矿化特征和成矿规律,对与铀矿体密切相关的赤铁矿化、黄铁矿化的激电异常特征进行研究。结果表明,在含黄铁矿化蚀变的构造岩中井中,激电异常曲线反应强烈,呈“低阻高极化”特征,同时在主方位曲线上呈“反S形”,反方位曲线上呈“正S形”。综合侧方位曲线异常形态,能够判断其在倾向及走向的延伸情况和规模变化,根据对应关系确定了井中含矿的激电异常特征,实现对工作区矿化(极化)体的预测和追索,为地质找矿提供依据。Taking Xiangyangping uranium deposit as the research object,the polarization survey of surface-borehole include the uranium mineralization characteristics and metallogenic pattern of Xiangyangping uranium deposit was carried out to explore the relationship between polarization anomaly and alteration of hematite and pyrite that favorable for uranium mineralization,and the characteristics of polarization anomalies of hematite mineralization and pyritization closely related to uranium ore body.The results show that in the deformed rock with pyritization alteration,the response of polarization anomaly curve in the well is strong,showing the characteristics of"low resistance and high polarization".At the same time,it shows"anti-S shape"on the main azimuth curve and"positive S shape"on the anti azimuth curve.The extension and scale change of tendency and strike can be judged by synthesizing the abnormal shape of lateral azimuth curve,and the characteristics of polarization anomaly of ore bearing in the well are determined according to the corresponding relationship,which together realize the tracing and prediction of mineralized(polarized)bodies in the working area,and provide basis for geological prospecting.

关 键 词：地井式 黄铁矿化 激电测量 向阳坪铀矿床 

分 类 号：P619.14[天文地球—矿床学] P631.3+25[天文地球—地质学]