【摘要】 在矿产勘查中,人们常应用电阻率和极化率参数来解释激电异常。当地质体和激电异常较为复杂时,利用这些参数就难以对异常源的性质进行合理解释,还可能推断出错误结论。采用小波处理法和金属因子法综合解释阿迪布拉达矿区复杂地质体的激电异常,选择db5小波基对激电数据进行二尺度分解与重构,较好地压制了绿片岩相区域变质和岩浆侵入的噪音干扰,且其能量较集中,边界问题不明显。在此基础上利用金属因子法有效提取了激电矿致异常。更多还原

【Abstract】 In mineral exploration, the apparent resistivity and apparent frequency (or apparent polarizability) parameters of induced polarization method are commonly utilized to describe the induced polarization anomaly. When the target geology structure is significantly complicated, these parameters would fail to reflect the nature of the anomaly source, and wrong conclusions may be obtained. A wavelet approach and a metal factor method were used to comprehensively interpret the induced polarization anomaly of complex geologic bodies in the Adi Bladia mine. Db5 wavelet basis was used to conduct two-scale decomposition and reconstruction, which effectively suppress the noise interference of greenschist facies regional metamorphism and magma intrusion, making energy concentrated and boundary problem unobservable. On the basis of that, the ore-induced anomaly was effectively extracted by the metal factor method.更多还原