激电中间梯度法在云南东川某铅锌矿勘查中的应用

An Exploration Case of IP Gradient Method in a Lead-Zinc Ore in the Middle of Dongchuan

在基本掌握测区及周边地质情况和外围电法勘探成果(物性、方法、装置)信息的基础上,进行野外电法不同方法技术的有效性试验,选择采用单一的双频激电中间梯度法及短剖面装置,有效观测视极化率、视电阻率参数,在地质成矿条件及成矿环境有利的前提下,可发现深部的隐伏矿体,且已得到钻探工作证实。不过电法勘探找矿,必须结合多种方法和多种技术来完成。

Through the exploring example of the electrical method in the lead-zinc ore of the northeast in Yunan,based on the geological condition around the surveying area and the information of the electrical method exploration,the effective experiments of the electrical method are done in the open field.When choosing the single dual-frequency induced intermediate gradient method,the short cross-section installment,the effective observing visualized polarization and the apparent resistivity parameter,the deep-concealed ore deposits can be found to be effective.However,if using the electrical method to explore ore deposits,the integrated information and the known geological and geo-physical data are required.