可控源音频大地电磁法在矿产资源上的应用试验

Application of controlled source audio magnetotelluric method on mineral resources

随着地质勘查技术水平的不断提高,找矿深度不断增大,对电法的探测深度要求越来越高,常规电法有时难以满足实际工作需要,与常规电法相比,可控源音频大地电磁法具有探测深度大、工作效率高、横向分辨率高等特点。为了考查可控源音频大地电磁法在金刚石原生矿勘查中的实际应用效果,在山东蒙阴已知矿产资源上进行实验工作。实验结果表明可控源音频大地电磁法对判定构造发育情况有良好的效果,通过对矿体产出部位与地电异常特征的对应关系,地电异常主要反应了控矿、容矿构造,可起到间接找矿的作用。

With constantly improve the level of geological exploration technology,the prospecting depth increasing,the detection depth requirements for electrical method is higher and higher,the conventional electrical method are sometimes difficult to meet the demand of practical work,compared with conventional method,the controlled source audio-frequency magnetotelluric method has deep detecting depth,high efficiency,high lateral resolution,etc.In order to check the practical application effect of controlled source audio magnetotelluric method in diamond primary mineral exploration,experimental work was carried out on the known mineral resources in mengyin,shandong province.Experimental results show that the controlled source audio-frequency magnetotelluric method has good effect to determine the structure development situation,through the occurence area with geoelectric anomaly characteristics of the corresponding relation,geoelectric anomalies mainly reflects the mining,ore controlling structures,can play the role of indirect prospecting.