时间域激电中时间常数与金属因子的提取及应用

摘要

By applying digital filtering forward modelling,optimization inversionand other numerical methods, this paper extractedtime constants and metal factors frommeasured time-domain induced polarization decay curve and evaluated the IP anomalies from various angles.This method was proved to be effective in the prospecting of Red Lake Au deposit in Ontario of Canada while 4 anomalies were blocked by this method and were verified by drilling prospecting.In comparison to conventional time-domain induced polarization,it is proved that this method is more effective in revealing IP anomaly information.%文章采用数字滤波正演、最优化反演等数值方法从实测时间域激电衰减曲线中提取时间常数、金属因子，多角度评价激电异常。在加拿大安大略省红湖金矿勘查中，应用该方法圈出4处异常，经过钻孔验证见矿，证实了该方法的有效性。相较于常规时间域激电法，该方法揭示激电异常信息的能力更强。