大冶铁矿接替资源勘查项目中“空、地、井”磁法测量的应用  

Application of Aero-Surface and Borehole Magnetic Exploration to the Prospecting of Exhausted Mines in the Daye Iron Mine

作　　者：高宝龙[1] 陶德益 詹应林[1] 范志雄[1] 周逵[1] 

机构地区：[1]中国冶金地质总局中南地质勘查院,武汉430081

出　　处：《地质与勘探》2010年第3期483-490,共8页Geology and Exploration

基　　金：全国危机矿山接替资源找矿项目(编号:200442007);全国危机矿山接替资源找矿新技术新方法项目(编号:200799084);中国冶金地质总局中南局科研项目<磁测空;地;井联合反演解释研究>的资助

摘　　要：大冶铁矿项目属2004年度危机矿山接替资源勘查项目九个试点项目之一。该项目的实施,不但取得了深部找矿的重大突破,解决了接替资源问题,同时也为全国危机矿山深部找矿工作的开展起到了示范作用。论文重点介绍了1/1万高分辨率航空磁测、1/2000高精度地面磁测、井中三分量磁测等磁法工作在勘查工作中的应用效果,特别是"空、地、井"磁测联合勘查,深部弱信息提取技术,精细反演技术、井-地磁测联合反演技术等几个方面值得借鉴和推广。初步统计,大冶铁矿参考磁异常布置的32个钻孔中,19个孔见矿。因此,本文认为在深部找矿(-600m)过程中,磁法工作依然大有可为。The Daye iron mine prospecting is one of the nine experimental subjects for the Prospecting of Crisis Mines in 2004. Through this subject,deep concealed ores are exposed and it has become an example for other crisis mines. This paper presents the application of 1/10000 aeromagnetic,1/2000 high-resolution surface-magnetic,and borehole magnetic prospecting conducted in the Daye iron mine. It focuses on the following aspects：combinations of ＂aero-surface-borehole＂ magnetic prospecting,pick-up technique on weak information of deep mines,precise inversion techniques,and joint inversion techniques of surface and borehole magnetic data. All these techniques are worth to be further applied for reference and expanding. The preliminary statistics shows that among the 32 drills which were designed with reference to the magnetic abnormities in the Daye iron mine,19 drills have revealed concealed ores. It demonstrates that magnetic prospecting can contribute much in efforts to search for concealed ores at depth （~600m） in exhausted mines.

关 键 词：大冶铁矿 “空、地、井”磁测 精细反演解释 深部找矿 

分 类 号：P631.2[天文地球—地质矿产勘探]