双频激电法在我国西部两类典型覆盖区金属矿体预测中的应用  

Application of Dual-frequency IP Method in Metal Ore prediction in Two Types of Typical Overburden Areas in Western China

作　　者：武炜[1] 张宝林[1] 梁光河[1] 李志远[1] 沈晓丽[1] 祁民[1] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029

出　　处：《地质与勘探》2009年第6期669-675,共7页Geology and Exploration

基　　金：国家"十一五"科技支撑计划重大项目二级课题"典型覆盖区金属矿综合地球物理定位预测技术开发及应用"(编号2006BAB01A02);中国科学院知识创新工程重要方向项目"云南红河州主要矿床类型的找矿勘查技术集成示范"(编号KZCX2-YW-Q04-03)联合资助

摘　　要：我国西部找矿潜力巨大,但复杂的地质构造演化过程和特殊的地貌景观条件,严重制约着找矿效率和效果。双频激电法以其自身具有的轻便灵活、观测精度高等优点,在西部特殊地貌区金属矿预测中能够发挥独特的作用。本文简要介绍了双频道激电法的原理和SQ-3 c双频道激电仪的特点,研究分析了该方法在西部两类典型覆盖区(云南高山植被覆盖区和新疆荒漠戈壁覆盖区)的应用效果;讨论了双频道激电法在工作设计、野外实践中遇到的装置和工作频率选择、接地电阻改善、测量出现负值等问题,及避免这些问题的方法技术。There are great potential in metal deposit production in Western China. At the same time, the efficiency and effect of deposit production are restricted severely because of complicated evolution of geological structure and special landscape. Dual-frequency IP method has many advantages and it is very suitable for metal deposit production of special landscape in Western China. In this paper, the theory of this method is introduced and then the effect of this method in typical overburden areas （ alpine vegetation overburden areas in Yunnan Province and Gobi desert overburden areas in Xinjiang Province） in Western China is studied. Finally, some problems in field works are discussed. These problems include choosing of array and work frequency, reducing of grounding resistance etc.

关 键 词：双频激电 金属矿预测 西部典型覆盖区 

分 类 号：P631[天文地球—地质矿产勘探]