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通过黔东南某铅锌矿的勘查实例,说明这样一个地质问题,在贵州山区采用物探方法间接找矿,倡导采用大比例尺联合电法勘探是必要的。据工区地球物理条件,如瞬变电磁法(TEM)和双频激电法的结合,一来两种方法能互为补充、相互印证,二来可靠性、分辨率得到保证,去伪存真、找矿效果能体现,最终观测异常已得到钻探工程验证。所提取的物探电性异常与地质体露头有较好的对应关系。
Through a case study of a lead-zinc mine in southeastern Guizhou, it is necessary to illustrate such a geological problem by geophysically prospecting in mountainous areas of Guizhou and advocating the use of large-scale combined electrical prospecting. According to the geophysical conditions in the work area, such as the combination of transient electromagnetic method (TEM) and dual-frequency induction method, the two methods can complement each other and confirm each other. Second, the reliability, resolution are guaranteed, pseudo-true, prospecting The effect can be reflected in the final observation anomalies have been drilling project verification. The extracted geophysical anomaly has a good correspondence with the geologic body outcrop.