时域激电数据进行频谱参数的反演方法及应用  

Spectral parameters inversion method based on TDIP and its application

作　　者：曹平华[1] 罗润林[2] 

机构地区：[1]江西有色地质勘查五队,江西九江332000 [2]桂林理工大学地球科学学院,广西桂林541004

出　　处：《物探与化探》2014年第5期1008-1011,共4页Geophysical and Geochemical Exploration

基　　金：广西自然科学基金项目(2011GXNSFB018005);广西教育厅科研项目(2009MS102);广西地质工程中心重点实验室项目(11-031-20-3)

摘　　要：Cole-Cole模型的频谱参数可以用于区分引起激电异常的极化体和寻找深部矿(化)体,因野外工作效率低,在勘探中没有得到广泛应用。当前的时域激电仪器可以观测反映二次极化电位衰减的多个时段的视充电率数据,根据频谱激电和时间域激电可以相互转换的理论,提出一种由时域激电数据提取出Cole-Cole模型参数方法,可得到4个频谱参数:视充电率Ms、视频率相关系数cs、视时间常数τs和视电阻率ρs。在江西某矿区激电中梯测量中,运用该方法推测地下地质体的性质并经钻探验证,取得了良好的找矿效果。The spectrum parameters of Cole-Cole model can be used to distinguish the polarization bodies and explore deep ore deposits based on induced polarization anomalies.Due to the low efficiency in field work, this technique has not been widely used in exploration. Current time-domain IP instrument can observe the apparent chargeability data which can T＇efleet the attenuation of secondary polarization potential in multiple time intervals. According to the theory that SIP and TDIP can be transformed mutually, in this paper the authors presented a method for extracting the Cole-Cole model parameters from TDIP data, which achieved good prospecting results while applying to the field geological exploration work.

关 键 词：时域激电 频谱参数 反演 视充电率 深部找矿 

分 类 号：P631[天文地球—地质矿产勘探]