面向铀矿地质应用的航空高光谱数据与伽马能谱数据协同应用研究  

Research on the Cooperative Application of Airborne Hyperspectral and Gamma Ray Spectral Data for Uranium Geological Applications

作　　者：车永飞[1] 张明林 叶发旺[1] 张建永[3] CHE Yongfei;ZHANG Minglin;YE Fawang;ZHANG Jianyong(National Key Laboratory of Remote Sensing Information and Image Analysis Technology,Beijing Research Institute of Uranium Geology,Beijing 100029,China;China National Uranium Co.Ltd.,Beijing 100013,China;Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang,Hebei 050002,China)

机构地区：[1]核工业北京地质研究院遥感信息与图像分析技术国家级重点实验室,北京100029 [2]中国铀业有限公司,北京100013 [3]核工业航测遥感中心,河北石家庄050002

出　　处：《铀矿地质》2023年第1期110-118,共9页Uranium Geology

基　　金：核能开发项目“基于航空高光谱与伽玛能谱的铀矿勘查技术研究”(编号:[2021]88)资助。

摘　　要：充分挖掘赋存于地学数据中的有用信息服务于铀矿勘查是地学信息技术应用领域研究的关键。高光谱遥感作为反映地物光谱特征内在物理属性的一种重要技术手段,能用于基岩裸露区岩性、矿物及蚀变识别,但岩石和矿物通常不完全裸露,单一的高光谱遥感数据无法满足矿物、岩石识别高精度的要求。伽马能谱数据不受植被覆盖的影响,能够反映浅地表及地下不同岩石、地物的放射性强度,在区分岩性和钾化蚀变信息方面效果好,弥补了高光谱数据受植被干扰的影响。高光谱数据和伽马能谱数据能够分别反映地物的光谱信息、空间信息及放射性信息,及其表征的岩石、矿物及蚀变特征,因此两种数据各具优势、能够互相补充。文章提出了基于航空高光谱和伽马能谱数据信息挖掘的铀矿控矿要素。首先,对两种数据分别进行矿物、断裂构造与伽马能谱放射性异常等多元信息提取,以二者数据的优势互补效应为基础,从空间相关性、内在地质规律的关联性进行协同应用。结果表明,研究提出的多源数据信息协同应用技术能够有效克服单一数据源分析结果的不足,可以提高铀成矿要素遥感解译和信息提取的精度。Fully mining useful information stored in geological data to serve uranium exploration is the key in the application of geological information technology. Hyperspectral remote sensing, as an important technical means to reflect the inherent physical attributes of the spectral characteristics of the ground objects, can be used to identify the lithology, minerals and alterations in the outcrop areas. However, the rocks and minerals are not always exposed in some area, and a single hyperspectral remote sensing data cannot meet the requirements for high-precision identification of minerals and rocks. Gamma energy spectrum data can reflect the radioactive intensity of rocks and objects beneath the surface or underground. Therefore, Hyperspectral data and gamma ray spectral data can reflect together the spectral information, spatial information and radioactive information of the ground objects with the rocks, mineral and alteration characteristics. In this paper, uranium ore control elements were studied with airborne hyperspectral and gamma ray spectral data information mining method. First, the two kinds of data are respectively extracted for the mineral, fault structure, radioactive anomaly and other multiple information. Then, the spatial correlation and the correlation of internal geological laws were comprehensively analyzed and use for the uranium exploration. The results showed that the proposed technique can effectively overcome the shortcomings of single data source, and improve the accuracy of remote sensing interpretation and information extraction of uranium metallogenic elements.

关 键 词：航空高光谱 伽马能谱 信息挖掘 铀矿勘查 

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