青海省上庄磁铁矿床高精度磁测资料解释研究  

Study on High Precision Magnetic Data of Shangzhuang Magnetite Deposit in Qinghai Province

作　　者：李忠平[1] Li Zhongping(Zhengyuan Geology ＆ Exploration Institute of Shandong,Bureau of China Metallurgy and Geology,Jinan Shandong 250014,China)

机构地区：[1]中国冶金地质总局山东正元地质勘查院,山东济南250014

出　　处：《工程地球物理学报》2018年第4期475-484,共10页Chinese Journal of Engineering Geophysics

摘　　要：为摸清青海省上庄磁铁矿床的深部延伸情况,在分析已有地质、物探资料的基础上,开展了地面高精度磁测。并对上庄磁铁矿床1∶5万地面磁异常进行分析解释,利用小波多尺度分解和2.5D人机交互反演等数据处理技术对区内的构造、岩体、矿体作定性和定量分析;然后根据收集的已知钻孔资料,对该区1∶1万平面磁异常数据进行三维正反演,研究区内深部矿体的赋存状态,Ⅰ号剖面2.5D人机交互反演结果与该处已知钻探资料基本对应。In order to find out the deep extension of the Shangzhuang magnetite deposit in Qinghai Province,based on the analysis of the geological and geophysical data,the surface high precision magnetic survey was carried out.The 1∶50 000 surface magnetic anomaly of Shangzhuang magnetite deposit is analyzed and interpreted and the data processing techniques such as wavelet multiscale decomposition and 2.5 Dinteractive inversion are used to qualitatively and quantitatively analyze the structure,rock mass and orebody in the area.Then,according to the known borehole data collected,the 3 Dforward and inverse analysis of the 1∶10 000 plane magnetic anomaly data in this area is carried out,and the occurrence state of the deep orebody in the area is studied.The result of 2.5 D man-machine interactive inversion of section I corresponds basically to the known drilling data.

关 键 词：青海省上庄铁矿 高精度磁测 小波多尺度分解 三维正反演 找矿模型 

分 类 号：P631.2[天文地球—地质矿产勘探]