广西花山花岗岩铀矿遥感勘探  

Remote sensing exploration of Huashan granite uranium deposit in Guangxi

作　　者：贾志强[1] 蔡晓凤 郭建东 时毓[1] 吴虹[1] JIA Zhi-iang;CAI Xiao-feng;GUO Jian-dong;SHI Yu;WU Hong(College of Earth Sciences,Guilin University of Technology,Guilin 541006,China;Nuclear&Geological Brigade 310 of Guangxi Zhuang Autonomous Region,Guilin 541213,China;Public Resource Trading Center of Guangxi Zhuang Autonomous Region,Nanning 530022,China)

机构地区：[1]桂林理工大学地球科学学院,广西桂林541006 [2]广西壮族自治区三一〇核地质大队,广西桂林541213 [3]广西壮族自治区公共资源交易中心,南宁530022

出　　处：《桂林理工大学学报》2019年第4期863-871,共9页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(41862003);广西空间信息与测绘重点实验室主任基金项目(1103108-10)

摘　　要：为扩大桂东花山花岗岩体的找铀矿远景,采用了"双定位"反演结合的遥感勘探方案,根据铀元素蜕变的放射成因热原理,在已知矿开展了ETM+对γ能谱异常的敏感波段检测,确定出了ETM+6为铀矿指示遥感数据。通过建立基于辐射传输方程的地表温度反演模型M1和基于统计学的γTS能谱异常非线性回归反演模型M2,用遥感线性/断裂构造对γTS作筛选,完成对反演γ能谱异常γTS的"双定位"勘探。主要成果显示:一级反演异常γTS的断裂长度为22.546 km,占断裂总长度的12.44%;二级反演异常γTS的断裂长度为64.718 km,占断裂总长度的35.70%。应用表明,"双定位"遥感勘探技术对寻找花山式铀矿行之有效。In order to enlarge the uranium prospecting of the Huashan rock mass in easten Guangxi,a"double positioning"inversion combined with remote sensing exploration scheme is adopted.According to the principle of radiogenic thermal of uranium transmutation,firstly,the sensitive band of ETM+to the anomaly of gamma ray spectrum is detected in the known mine,and the ETM+6 is the indicator remote sensing data of the uranium mine.In this study,the land surface temperature inversion model M1 based on the radiative transfer equation,as well as the statistical anomalous non-linear regression inversion model of γTS energy spectrum M2 were established,and the γTS was screened by remote sensing linear/fault structures to complete the inversion of γTS "dual positioning"exploration.The main achievements of this work in Huashan rock are first-order inversion anomaly γTS of the fault with a length of 22.546 km,the total length of the fracture ratio accounting to 12.44%.The second-order inversion anomaly γTS of the fault with length of 64.718 km accounted to the total length of the fracture ratio of 35.70%.These increase the current uranium mining by conventional technical means,and provide a new uranium prospecting in this area.The application shows that the"double positioning"remote sensing exploration technique is effective in Huashan type uranium deposit.

关 键 词：铀矿 花岗岩 遥感勘探 花山 广西 

分 类 号：P627[天文地球—地质矿产勘探] P619.14[天文地球—地质学]