时间域激发极化法在某多金属矿普查中的应用

Application of Time Domain Induced Polarization Method in Exploration of A Polymetallic Deposit

激发极化法是通过利用矿石与围岩固有电场在外部电场作用下发生的不同激发极化效应来研究岩矿石基础物性参数的一种找矿手法。在金属矿化探异常区进行中间梯度扫面和对称四极测深电法测量工作,分析了时间域激发极化法在该金属矿的视电阻率和极化率特征,查明了矿石异常体的埋深、倾向和产状发育。结果表明,电法解译异常成果与地质与化探资料相吻合,为寻找该区隐伏矿床提供了依据,取得了较好的找矿效果。

The induced polarization method is a kind of prospecting method to study the physical property parameters of rock ore by using the different induced polarization effect of the natural electric field of ore and surrounding rock under the action of external electric field.This work mainly carried out the measurement work of intermediate gradient sweep and symmetrical quadrupole sounding in the geochemical exploration anomaly area of the metal mine,analyzed the resistivity and polarizability characteristics of the time domain induced polarization method in the metal mine,and identified the buried depth,tendency and occurrence development of the ore anomaly.The results show that the results of electrical interpretation are in agreement with the geological and geochemical data,which provides a basis for searching for hidden ore deposits in this area.