物探与化探
物探與化探
물탐여화탐
GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2014年
5期
1008-1011
,共4页
时域激电%频谱参数%反演%视充电率%深部找矿
時域激電%頻譜參數%反縯%視充電率%深部找礦
시역격전%빈보삼수%반연%시충전솔%심부조광
time-domain induced polarization ( TDIP )%spectrum parameters%inversion%apparent chargeability%deep prospecting
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。
Cole-Cole模型的頻譜參數可以用于區分引起激電異常的極化體和尋找深部礦(化)體,因野外工作效率低,在勘探中沒有得到廣汎應用。噹前的時域激電儀器可以觀測反映二次極化電位衰減的多箇時段的視充電率數據,根據頻譜激電和時間域激電可以相互轉換的理論,提齣一種由時域激電數據提取齣Cole-Cole模型參數方法,可得到4箇頻譜參數:視充電率Ms、視頻率相關繫數cs、視時間常數τs 和視電阻率ρs。在江西某礦區激電中梯測量中,運用該方法推測地下地質體的性質併經鑽探驗證,取得瞭良好的找礦效果。
Cole-Cole모형적빈보삼수가이용우구분인기격전이상적겁화체화심조심부광(화)체,인야외공작효솔저,재감탐중몰유득도엄범응용。당전적시역격전의기가이관측반영이차겁화전위쇠감적다개시단적시충전솔수거,근거빈보격전화시간역격전가이상호전환적이론,제출일충유시역격전수거제취출Cole-Cole모형삼수방법,가득도4개빈보삼수:시충전솔Ms、시빈솔상관계수cs、시시간상수τs 화시전조솔ρs。재강서모광구격전중제측량중,운용해방법추측지하지질체적성질병경찬탐험증,취득료량호적조광효과。
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 reflect the attenuation of secondary polariza-tion potential in multiple time intervals. According to the theory that SIP and TDIP can be transformed mutually, in this paper the au-thors 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.