综合地球物理方法在某金属矿找矿中的应用

Application of comprehensive geophysical method in prospecting of a metal deposit

文中旨在利用综合地球物理方法对某金属矿找矿开展研究,分析对比该区各种方法的应用效果,探究区域上适宜的地球物理找矿方法。通过试验了解到运用音频大地电磁法对研究区金属矿进行找矿研究,可以有效获取地层构造分布特征,达到2.0km探测深度;运用可控原音频大地电磁法进行金属矿找矿研究与音频大地电磁法相比,具有更强的抗干扰能力,然而探测深度在1.0km左右;时间域激电测深法可以很好的反映矿体激电效应,矿体和围岩有着较为明显的充电率差异,联合应用激电测深法与大地电磁法,能够对重点靶区进行圈定,提高找矿效率与质量。

The purpose of this paper is to use comprehensive geophysical methods to carry out research on a metal ore prospecting,analyze and compare the application effect of various methods in this area,and explore the suitable geophysical prospecting methods in the region.Through the test,we know that the audio frequency magnetotelluric method can effectively obtain the distribution characteristics of stratum structure and reach the detection depth of 2.0KM;Compared with the audio frequency magnetotelluric method,the audio frequency magnetotelluric method has stronger anti-interference ability,but the detection depth is about 1.0KM;The time domain IP sounding method can well reflect the IP effect of ore body,and the charging rate difference between ore body and surrounding rock is obvious.The combined application of IP sounding method and magnetotelluric method can delineate the key target area and improve the prospecting efficiency and quality.