Occam反演在卫境地区花岗岩型铀矿勘查CSAMT资料处理中的应用  

Occam inversion in the application of the CSAMT data in granite type uranium deposit exploration in Weijing area

作　　者：孟凡兴[1,2] 全旭东[1,2] 徐国苍 孔志召[1,2] 张伟[1,2] 朱佳宁[1,2] MENG Fanxing QUAN Xudong XU Guocang KONG Zhizhao ZHANG Wei ZHU Jianing(Airborne Survey and Remote Sensing Center of Nuclear Industry, Shijiazhuang 050002,China Key Laboratory for Geophysical Exploration Technology Center of Uranium Resource, Shijiazhuang 050002 ,China)

机构地区：[1]核工业航测遥感中心,石家庄050002 [2]中核集团公司铀资源地球物理勘查技术中心(重点实验室),石家庄050002

出　　处：《物探化探计算技术》2017年第1期32-37,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国核工业地质局基础地质专项(201543)

摘　　要：花岗岩型铀矿床一般产在岩体内部或岩体周边,因此岩体发育情况的探测对铀矿勘查工作的进一步开展具有重要意义。为了解Occam反演方法处理花岗岩型铀矿勘查CSAMT数据时的应用效果,这里设计了隐伏岩体的理论模型,正演理论数据采用Occam反演方法进行反演。实验表明,Occam反演对隐伏岩体的CSAMT理论数据具有稳定收敛性,反演结果和理论模型能够很好的吻合。结合卫境地区的勘查实例验证了Occam反演方法的有效性,为以后CSAMT方法间接寻找花岗岩型铀矿提供了参考。Granite type uranium deposit mainly locates in inner rock body or adjacent encasing body.Thus probing the developmental conditions of rock body have significance for uranium deposit exploration.In order to understand Occam inversion method processing granite type uranium deposit exploration and application effect of CSAMT data,The theory model of concealed rock mass is designed and he forward theory of Occam inversion method is adopted to improve the inversion data in this paper.Experiments show that Occam inversion of concealed rock mass possesses stable convergence theory of CSAMT data,the inversion result can match well to the theoretical model.Combined with guard position the exploration examples verify the effectiveness of Occam inversion method,for the CSAMT indirectly to find granite type uranium deposit provides the theoretical basis and practical experience.

关 键 词：OCCAM反演 CSAMT方法 隐伏岩体 卫境地区 花岗岩型铀矿 

分 类 号：P631.4[天文地球—地质矿产勘探]