磁测资料处理新方法及在危机矿山挖潜中的应用  

THE APPLICATION OF NEW MAGNETIC DATA PROCESSING METHODS TO THE POTENTIALITY EXPLORATION IN CRISIS MINES

作　　者：刘天佑[1] 刘大为[1] 詹应林[2] 张效良[2] 

机构地区：[1]中国地质大学,湖北武汉430074 [2]中国冶金地质勘查工程总局中南地质勘查院,湖北武汉430081

出　　处：《物探与化探》2006年第5期377-381,396,共6页Geophysical and Geochemical Exploration

基　　金：国家自然科学基金项目(40374041)资助

摘　　要：研究了危机矿山深部找矿的高精度磁测资料处理解释新方法技术:基于三度体数值积分法的三维可视化精细反演,小波分析方法提取深部弱磁信号,起伏地形下高精度磁测资料快速化平处理的等效偶层法,以及旧资料换算为并与新资料对比的综合处理解释等方法。将这些新方法运用于大冶铁矿危机矿山的深部找矿,获得明显的地质效果。2005年根据解释结果在15线布置的钻孔打到了26.65 m厚的磁铁矿体,说明在危机矿山进一步挖潜中,新方法技术的运用是十分必要的。This paper presents new data processing and interpretation methods for the high-precision magnetic data in search for deepburied minerals in crisis mines. Such means as the three-dimensional visualized inversion based on the numerical integral of 3D bodies, the weak signal identification by the wavelet analysis tools, the equivalent dipole layer method for the fast reduction of magnetic data from an undulated relief to a horizontal plane, and the transformation of to, all fall into this category. The performance of these new methods was illustrated in search for deep-buried minerals in the Daye iron mine, and a magnetite ore body more than 30m thick was discovered by the drilling along No. 15 exploration line arranged according to the authors＇ interpretation in 2005. The application of these new methods shows that the adoption of these new methods is essential in the continued resources exploration for crisis mines.

关 键 词：危机矿山 磁测资料处理 三维可视化反演 小波分析方法 等效偶层法曲化平 大冶铁矿 

分 类 号：P631[天文地球—地质矿产勘探]